Automatic glue removal device and glue removal method for circuit board production

Abstract

The present invention provides an automatic degumming device and degumming method for circuit board production, including a conveying component, wherein the conveying component includes a support frame, a side plate, a sliding groove, a sliding block, a mounting hole and a chain. The present invention uses a synchronous electric cylinder to accurately adjust the spacing of the U-shaped frame to adapt to circuit boards of different widths through the careful design of the conveying component, and cooperates with the coordinated operation of the conveying motor, the driving wheel, the driven wheel and the chain to achieve smooth and automatic conveying of the circuit board between various degumming processes, greatly improving the degumming efficiency and meeting the needs of large-scale production. Compared with traditional manual or simple mechanical degumming methods, the degumming time of a single circuit board is greatly shortened, and the overall production capacity of the production line is improved; by equipping the sol storage box and the water storage tank with a liquid collecting hopper and a filter frame, the sol and cleaning water spilled during the degumming process can be collected and filtered, realizing the recycling of the sol and water resources, thereby reducing the consumption of raw materials and reducing production costs.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board production, and in particular to an automatic glue removal device and a glue removal method for circuit board production. Background Art

[0002] In the modern circuit board production process, the drilling process is one of the most critical links. After the drilling operation is completed, due to the influence of factors such as the drill bit used and the processing technology, glue residue will inevitably remain on the hole wall. These glue residues have certain viscosity and adhesion. If they are not properly and thoroughly removed, they will cause a series of serious problems. In the subsequent electroplating process, the presence of glue residue will prevent the plating solution from evenly adhering to the hole wall and the surface of the circuit board, resulting in uneven thickness of the electroplating layer, which in turn affects the conductivity and signal transmission quality of the circuit board. For chemical plating, glue residue will interfere with the normal progress of the chemical reaction, causing defects in the coating formed by chemical plating, increased porosity and other undesirable phenomena, greatly reducing the corrosion resistance and reliability of the circuit board. During the lamination process of multi-layer boards, the glue residue will destroy the close fit between the layers of the boards, forming gaps and bubbles, which will seriously weaken the interlayer bonding strength of the multi-layer boards. In the subsequent processing and use, it is easy to cause delamination, circuit breaking and other faults, which will have an extremely adverse and even devastating impact on the overall electrical performance and long-term reliability of the circuit boards, greatly reducing the yield and service life of the circuit boards, and increasing production costs and after-sales risks.

[0003] Traditional methods of removing glue from circuit boards mostly rely on manual operation or simple mechanical tools. Manual glue removal is not only inefficient and difficult to meet the needs of large-scale industrial production, but also due to differences in operators' skill levels, working conditions, and fatigue levels, it is difficult to ensure consistency and stability in the glue removal effect. It is easy to miss or over-remove glue, causing unnecessary damage to the circuit board. Simple mechanical glue removal tools have relatively single functions and can often only remove glue from circuit boards of specific types or sizes. They have poor adaptability, and during the glue removal process, there are also problems such as large damage to the circuit board and incomplete glue removal. In addition, the traditional glue removal method lacks a recycling mechanism for the use of sols, resulting in a large amount of sol waste and increased production costs;

[0004] In the production process of circuit boards, in order to avoid the adverse effects of colloid residue on the quality of circuit boards, degumming is usually required. However, the current degumming work is mostly done manually, which is not only cumbersome and inefficient, but also difficult to ensure the thoroughness of degumming, which increases the uncertainty and quality risk of circuit board production. Therefore, an automatic degumming device and degumming method for circuit board production are proposed. Summary of the invention

[0005] In view of this, the present invention hopes to provide an automatic degumming device and degumming method for circuit board production to solve or alleviate the technical problems existing in the prior art and at least provide one of the beneficial options.

[0006] In order to solve the above technical problems, a technical solution adopted in the present application is: an automatic glue removal device for circuit board production, comprising a conveying assembly, wherein the conveying assembly comprises a support frame, a side plate, a sliding groove, a sliding block, a mounting hole, a synchronous electric cylinder, a limiting cylinder, a telescopic column, a U-shaped frame, a threaded hole, a threaded column, a clamping plate, a limiting sliding groove, a limiting slider, a screw rod, a screw hole, a motor bracket, a conveying motor, an output shaft, a driving wheel, a driven wheel and a chain;

[0007] Side plates are welded on both sides of the upper surface of the support frame, and sliding grooves are provided in the middle of the adjacent sides of the two side plates, and sliding blocks are slidably connected to the inner side walls of the two sliding grooves, and mounting holes are provided at the centers of the adjacent sides of the two sliding blocks, and synchronous electric cylinders are fixedly connected to the inner side walls of the two mounting holes, and the outer sides of the adjacent sides of the two sliding blocks close to the mounting holes are fixedly connected to the limiting cylinders, and the output ends of the two synchronous electric cylinders are fixedly connected to telescopic columns, and the outer sides of the telescopic columns are slidably connected to the inner side walls of the limiting cylinders, and the adjacent sides of the two telescopic columns are fixedly connected to U-shaped frames, and threaded holes are provided at the centers of the adjacent sides of the upper surfaces of the two U-shaped frames, and the inner side walls of the threaded holes are threadedly connected to A threaded column is connected, and the bottom of the outer wall of the threaded column is rotatably connected to a clamping plate, the inner top walls of the two sliding grooves are provided with limited sliding grooves, and the upper surface centers of the two sliding blocks are fixedly connected to limited sliding blocks, the upper parts of the rear surfaces of the two side plates are penetrated by screws, and the center of the rear surface of the limiting sliding block is provided with a screw hole, the outer wall of the screw is threadedly connected to the inner wall of the screw hole, the rear part of the upper surface of the two side plates is fixedly connected to a motor bracket, and the inner wall of the motor bracket is fixedly connected to a conveying motor, and the output end of the conveying motor is fixedly connected to two driving wheels through an output shaft, and the rear parts of the outer wall of the two screws are fixedly connected to driven wheels, and the outer walls of the two driving wheels are rotatably connected to the outer walls of the two driven wheels through chains respectively.

[0008] Further preferably, the upper part of one side close to each other and the lower part of the front part close to the motor bracket of the two side panels are fixedly connected to a sol spray nozzle through a first mounting frame, the rear part of the inner bottom wall of the support frame is fixedly connected to a sol storage box, and a sol delivery pump is installed at the bottom of one side of the sol storage box, and the liquid outlet end of the sol delivery pump is connected to two delivery branches through a connecting pipe, and the liquid outlet ends of the two delivery branches are respectively connected to the liquid inlet ends of the two sol spray nozzles.

[0009] Further preferably, the upper and lower parts of the adjacent sides of the two side panels are fixedly connected to support plates near the front of the first mounting frame, the middle parts of the adjacent sides of the two support plates are provided with limiting grooves, the inner side walls of the two limiting grooves are slidably connected to limiting slides, the middle parts of the adjacent sides of the two limiting slides are provided with mounting grooves, the inner side walls of the mounting grooves are fixedly connected to scrapers by multiple screws, the middle parts of the distant sides of the two support plates are fixedly connected to adjusting electric cylinders, the output ends of the adjusting electric cylinders are fixedly connected to the center of the upper surface of the limiting slides, the upper surfaces of the sol storage box and the water tank are fixedly connected to liquid collecting hoppers, the bottoms of the liquid collecting hoppers are connected to a filter frame, and a filter element is installed on the inner side wall of the filter frame.

[0010] Further preferably, the upper part of one side close to the two side panels and the front part of the lower part close to the support plate are fixedly connected to a water spray head through a second mounting frame, the front part of the inner bottom wall of the support frame is fixedly connected to a water storage tank, a water pump is installed at the bottom of one side of the water storage tank, the liquid outlet end of the water pump is connected to two water supply branches through a water supply pipe, and the water outlet ends of the two water supply branches are respectively connected to the water inlet ends of the two water spray heads.

[0011] Further preferably, the upper and lower parts of the adjacent sides of the two side panels are fixedly connected to a hair dryer via a third mounting frame, and the inner bottom wall of the support frame is fixedly connected to a heater near the front of the water tank, and the air outlet end of the heater is connected to two hot air branch pipes via a hot air main pipe, and the air outlet ends of the two hot air branch pipes are respectively connected to the air inlet ends of the two hair dryers.

[0012] Further preferably, the front and rear parts of the upper surface of the U-shaped frame near the threaded hole are provided with limiting sliding holes, the front and rear parts of the upper surface of the clamping plate are fixedly connected with limiting sliding columns, the outer wall of the limiting sliding column is slidably connected to the inner wall of the limiting sliding hole, the inner bottom wall of the U-shaped frame and the lower surface of the clamping plate are fixedly connected with protective pads, and the top of the threaded column is fixedly connected with a knob.

[0013] An automatic glue removal device for circuit board production, comprising a glue removal component, wherein the glue removal component comprises a bracket, a first motor, a bidirectional screw rod, a guide rod, a clamping plate, a linear guide rail, a second motor, a slider, an electric telescopic rod, a drive box, a third motor, a transmission wheel, a transmission belt and a brush;

[0014] A first motor is installed on the front surface of the bracket, the output shaft of the first motor is fixedly connected to one end of the bidirectional screw rod, the outer side wall of the bidirectional screw rod is symmetrically threaded with two clamping plates, the inner side wall of the bracket is symmetrically fixedly connected with a guide rod, the inner side wall of the bracket is installed with a linear guide, one end of the linear guide is installed with a second motor, the bottom of the linear guide is slidably connected with a slider, the bottom of the slider is installed with an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected with a driving box, the top of the driving box is installed with a third motor, the inner side wall of the driving box is symmetrically and automatically connected with two transmission wheels, the output shaft of the third motor is fixedly connected to one of the transmission wheels, the outer side wall of the transmission wheel is sleeved with a transmission belt, the bottom of the transmission wheel is fixedly connected with a brush, the degumming agent is sprayed through an atomizing nozzle, the linear guide is driven by the second motor to work, the slider is driven to move, the height of the brush is adjusted by the electric telescopic rod, and the third motor drives the brush to rotate to clean the surface of the circuit board; the degumming assembly also includes a liquid dispensing tube and an atomizing nozzle;

[0015] A liquid dispensing pipe is fixedly connected to one side of the driving box, and atomizing nozzles are evenly installed on the bottom of the liquid dispensing pipe.

[0016] Further preferably, the clamping plate is slidably connected to the outer side wall of the guide rod; and the brush is rotatably connected to the bottom of the driving box.

[0017] Further preferably: a main body component is arranged outside the adhesive removal component, and the main body component includes a bottom plate and a base;

[0018] The top of the bottom plate is fixedly connected with a base, and the bracket is fixedly connected to the top of the base; and the inner side wall of the base is evenly installed with conveying wheels.

[0019] Further preferably, the bottom of the bottom plate is connected to a drain pipe; and the bottom of the bottom plate is symmetrically fixedly connected to support legs.

[0020] In order to solve the above technical problems, another technical solution adopted by the present application is: a method for removing glue of an automatic glue removal device for circuit board production, comprising the following steps:

[0021] Step 1: According to the width of the circuit board, control the synchronous electric cylinder to push the telescopic column to move, and adjust the distance between the two U-shaped frames to adapt to the width of the circuit board;

[0022] Step 2: Place the circuit board between the inner bottom wall of the U-shaped frame and the clamping plate, and turn the knob to rotate the threaded column in the threaded hole, driving the clamping plate to move downward to clamp and fix the circuit board;

[0023] Step 3: After the circuit board is fixed, the conveying motor is started, and the conveying motor drives the driving wheel to rotate. The driving wheel drives the driven wheel and the screw to rotate through the chain, so that the sliding block drives the circuit board to move forward;

[0024] Step 4: When the circuit board moves between the two sol spray heads, the sol delivery pump delivers the sol in the sol storage box to the sol spray head through the connecting pipe and the delivery branch pipe. The sol spray head evenly sprays the sol on the upper and lower surfaces of the circuit board to infiltrate and soften the glue residue on the circuit board.

[0025] Step 5: After the circuit board passes through the sol spraying area, start the adjustment electric cylinder, adjust the electric cylinder to push the limit slide to move, drive the scraper close to the surface of the circuit board, and scrape the softened glue residue from the surface of the circuit board;

[0026] Step 6: After the scraping is completed, start the water pump, which transports the water in the water tank to the water spray head through the water pipe and the water branch pipe. The water spray head sprays water to the circuit board to wash away the residual sol and impurities left by the scraping on the surface of the circuit board;

[0027] Step 7: After the circuit board is cleaned, the heater is started. The hot air generated by the heater is transported to the blower head through the hot air main pipe and the hot air branch pipe. The blower head blows hot air to the circuit board to dry the surface of the circuit board.

[0028] Step 8. During the degumming process, the spilled sol and cleaning water are collected by the liquid collecting buckets above the sol storage box and the water storage tank respectively. The collected liquid flows into the filter frame. After being filtered by the filter element in the filter frame, the sol is recovered to the sol storage box for recycling, and the water is recovered to the water storage tank for recycling.

[0029] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0030] The present invention uses a synchronous electric cylinder to accurately adjust the spacing of the U-shaped frames to accommodate circuit boards of different widths through the careful design of the conveying components, and cooperates with the conveying motor, the driving wheel, the driven wheel and the chain to realize the smooth and automatic conveying of the circuit boards between the various degumming processes, which greatly improves the degumming efficiency and meets the needs of large-scale production. Compared with the traditional manual or simple mechanical degumming method, the degumming time of a single circuit board is greatly shortened, and the overall production capacity of the production line is improved;

[0031] The present invention is equipped with a liquid collecting hopper and a filter frame above the sol storage tank and the water storage tank, so as to collect and filter the sol and cleaning water spilled during the degumming process, thereby realizing the recycling of the sol and water resources, thereby reducing the consumption of raw materials and reducing the production cost;

[0032] The present invention drives a bidirectional screw to rotate by a first motor, clamps a circuit board by a clamp, sprays a degumming agent by an atomizing nozzle, drives a slider to move by a linear guide rail, and drives a brush to rotate by a third motor to clean the surface of the circuit board. The degumming operation does not need to be manually completed by a worker, thereby improving the degumming efficiency, ensuring thorough degumming, and reducing the quality risk of circuit board production.

[0033] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a structural diagram of one viewing angle of the present invention;

[0036] Figure 2 Another perspective structural diagram of the present invention;

[0037] Figure 3 It is a structural diagram of the sliding block and the conveying motor of the present invention;

[0038] Figure 4 It is a structural diagram of the synchronous electric cylinder and the U-shaped frame of the present invention;

[0039] Figure 5 This is a structural diagram of the adjusting electric cylinder and the scraper of the present invention;

[0040] Figure 6 It is a structural diagram of the hair dryer and the heater of the present invention;

[0041] Figure 7 A schematic flow chart of a method for removing glue by an automatic glue removal device for producing circuit boards according to the present invention;

[0042] Figure 8 This is a structural diagram of Embodiment 4 of the present invention;

[0043] Fig. 9 This is a bottom view of the structure of the fourth embodiment of the present invention;

[0044] Fig.10 This is a structural diagram of a glue removal component according to a fourth embodiment of the present invention;

[0045] Fig.11 This is a diagram showing the internal structure of a drive box according to a fourth embodiment of the present invention.

[0046] Figure numerals: 1, conveying assembly; 11, support frame; 12, side plate; 13, sliding groove; 14, sliding block; 15, mounting hole; 16, synchronous electric cylinder; 17, limiting cylinder; 18, telescopic column; 19, U-shaped frame; 20, threaded hole; 21, threaded column; 22, clamping plate; 23, limiting sliding groove; 24, limiting sliding block; 25, screw; 26, screw hole; 27, motor bracket; 28, conveying motor; 29, output shaft; 30, driving wheel; 31, driven wheel; 32, chain; 33, first mounting frame; 34, sol spray head; 35, sol storage box; 36, sol Delivery pump; 37, connecting pipe; 38, delivery branch pipe; 39, support plate; 40, limit groove; 41, limit slide plate; 42, installation groove; 43, screw; 44, scraper; 45, adjustment electric cylinder; 46, second installation frame; 47, sprinkler head; 48, water storage tank; 49, water pump; 50, water pipe; 51, water branch pipe; 52, third installation frame; 53, hair dryer; 54, heater; 55, hot air main pipe; 56, hot air branch pipe; 57, limit slide hole; 58, limit slide column; 59, protective pad; 60, knob; 61, liquid collecting bucket; 62, filter frame; 63, filter element;

[0047] 100, main body assembly; 101, bottom plate; 102, base; 103, conveying wheel; 104, drain pipe; 105, supporting leg; 220, glue removal assembly; 221, bracket; 222, first motor; 223, bidirectional screw rod; 224, guide rod; 225, clamping plate; 226, linear guide rail; 227, second motor; 228, slider; 229, electric telescopic rod; 210, drive box; 211, third motor; 212, transmission wheel; 213, transmission belt; 214, brush; 215, dispensing tube; 216, atomizing nozzle. DETAILED DESCRIPTION

[0048] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0049] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] Embodiment 1

[0051] like Figure 1-Figure 6As shown, an embodiment of the present invention provides an automatic glue removal device for circuit board production, including a conveying assembly 1, the conveying assembly 1 includes a support frame 11, a side plate 12, a sliding groove 13, a sliding block 14, a mounting hole 15, a synchronous electric cylinder 16, a limiting cylinder 17, a telescopic column 18, a U-shaped frame 19, a threaded hole 20, a threaded column 21, a clamping plate 22, a limiting sliding groove 23, a limiting slider 24, a screw 25, a screw hole 26, a motor bracket 27, a conveying motor 28, an output shaft 29, a driving wheel 30, a driven wheel 31 and a chain 32;

[0052] Side plates 12 are welded on both sides of the upper surface of the support frame 11, and sliding grooves 13 are provided in the middle of the adjacent sides of the two side plates 12. The inner side walls of the two sliding grooves 13 are slidably connected with sliding blocks 14. The centers of the adjacent sides of the two sliding blocks 14 are provided with mounting holes 15. The inner side walls of the two mounting holes 15 are fixedly connected with synchronous electric cylinders 16. The adjacent sides of the two sliding blocks 14 are fixedly connected with the outer sides of the mounting holes 15. The output ends of the two synchronous electric cylinders 16 are fixedly connected with telescopic columns 18. The outer sides of the telescopic columns 18 slide The inner side wall of the two telescopic columns 18 is connected to the inner side wall of the limit cylinder 17, and the adjacent side of the two telescopic columns 18 is fixedly connected with a U-shaped frame 19. The center of the upper surface of the two U-shaped frames 19 is provided with a threaded hole 20, and the inner side wall of the threaded hole 20 is threadedly connected with a threaded column 21. The bottom of the outer side wall of the threaded column 21 is rotatably connected with a clamping plate 22. The inner top walls of the two sliding grooves 13 are provided with a limited sliding groove 23. The upper center of the upper surface of the two sliding blocks 14 is fixedly connected with a limited slider 24. The upper part of the rear surface of the two side plates 12 is penetrated by a screw 25. The rear surface of the limit slider 24 is A screw hole 26 is opened at the center, the outer wall of the screw rod 25 is threadedly connected to the inner wall of the screw hole 26, the rear part of the upper surface of the two side plates 12 is fixedly connected to a motor bracket 27, the inner wall of the motor bracket 27 is fixedly connected to a conveying motor 28, the output end of the conveying motor 28 is fixedly connected to two driving wheels 30 through an output shaft 29, the rear part of the outer wall of the two screw rods 25 is fixedly connected to a driven wheel 31, the outer walls of the two driving wheels 30 are respectively rotatably connected to the outer walls of the two driven wheels 31 through chains 32, and the two fixedly connected through the output shaft 29 are driven by the conveying motor 28. The driving wheel 30 rotates, thereby driving the two driven wheels 31 connected by the chain 32 to rotate synchronously, and then driving the two screw rods 25 to rotate synchronously. Since the outer wall of the screw rod 25 is threadedly connected to the inner wall of the screw hole 26 on the limit slider 24, the two limit sliders 24 are driven to move synchronously inside the two limit slide grooves 23 respectively, and then drive the two sliding blocks 14 to move synchronously inside the sliding groove 13. Through the synchronous movement of the two sliding blocks 14, the two U-shaped frames 19 are driven to move synchronously, and then the circuit boards clamped and fixed on the two U-shaped frames 19 are driven to move.

[0053] In the first embodiment, specifically: the upper part of the adjacent side of the two side panels 12 and the front part of the lower part close to the motor bracket 27 are fixedly connected to the sol agent nozzle 34 through the first mounting frame 33, the rear part of the inner bottom wall of the support frame 11 is fixedly connected to the sol agent storage box 35, and a sol agent delivery pump 36 is installed at the bottom of one side of the sol agent storage box 35. The liquid outlet end of the sol agent delivery pump 36 is connected to two delivery branches 38 through a connecting pipe 37, and the liquid outlet ends of the two delivery branches 38 are respectively connected to the liquid inlet ends of the two sol agent nozzles 34. The sol agent in the sol agent storage box 35 is delivered to the sol agent nozzle 34 through the connecting pipe 37 and the delivery branch pipe 38 by the sol agent delivery pump 36, so that the sol agent nozzle 34 evenly sprays the sol agent onto the upper and lower surfaces of the circuit board, so that the glue residue on the circuit board is fully infiltrated and softened by the sol agent.

[0054] In the first embodiment, specifically: the upper and lower parts of the adjacent sides of the two side plates 12 are fixedly connected with support plates 39 near the front of the first mounting frame 33, the middle parts of the adjacent sides of the two support plates 39 are provided with limiting grooves 40, the inner side walls of the two limiting grooves 40 are slidably connected with limiting slide plates 41, the middle parts of the adjacent sides of the two limiting slide plates 41 are provided with mounting grooves 42, the inner side walls of the mounting grooves 42 are fixedly connected with scrapers 44 by multiple screws 43, the middle parts of the distant sides of the two support plates 39 are fixedly connected with adjusting electric cylinders 45, the output end of the adjusting electric cylinder 45 is fixedly connected to the center of the upper surface of the limiting slide plate 41, and the scraper 44 can be easily removed by removing the screws 43, so as to facilitate the replacement of the scraper 44 according to the circuit boards of different widths.

[0055] In the first embodiment, specifically: the upper part of the adjacent side of the two side panels 12 and the front part of the lower part close to the support plate 39 are fixedly connected to the water spray head 47 through the second mounting frame 46, the front part of the inner bottom wall of the support frame 11 is fixedly connected to the water storage tank 48, and a water pump 49 is installed at the bottom of one side of the water storage tank 48. The liquid outlet of the water pump 49 is connected to two water delivery branches 51 through a water delivery pipe 50, and the water outlet ends of the two water delivery branches 51 are respectively connected to the water inlet ends of the two water spray heads 47. The water in the water storage tank 48 is transported to the water spray head 47 through the water delivery pipe 50 and the water delivery branch pipe 51 by the water pump 49, so that the water spray head 47 sprays water onto the upper and lower surfaces of the circuit board to wash away the residual sol and impurities left by the scraper on the surface of the circuit board.

[0056] In the first embodiment, specifically: the upper and lower sides of the two side panels 12 that are adjacent to each other and the front part of the second mounting frame 46 are fixedly connected with a blower head 53 through a third mounting frame 52, the inner bottom wall of the support frame 11 is fixedly connected with a heater 54 in front of the water tank 48, the air outlet end of the heater 54 is connected with two hot air branch pipes 56 through a hot air main pipe 55, the air outlet ends of the two hot air branch pipes 56 are respectively connected to the air inlet ends of the two blower heads 53, the hot air generated by the heater 54 is transported to the blower head 53 through the hot air main pipe 55 and the hot air branch pipe 56, and thus blown toward the upper and lower surfaces of the circuit board, so that the surface of the circuit board is quickly dried.

[0057] In the first embodiment, specifically: the front and rear parts of the upper surface of the U-shaped frame 19 near the threaded hole 20 are provided with limiting sliding holes 57, the front and rear parts of the upper surface of the clamping plate 22 are fixedly connected with limiting sliding columns 58, the outer wall of the limiting sliding column 58 is slidably connected to the inner wall of the limiting sliding hole 57, and the limiting sliding column 58 on the clamping plate 22 slides inside the limiting sliding hole 57, thereby limiting the limiting sliding column 58, thereby increasing the stability of the up and down movement of the clamping plate 22.

[0058] In the first embodiment, specifically: the inner bottom wall of the U-shaped frame 19 and the lower surface of the clamping plate 22 are fixedly connected with a protective pad 59, and the protective pad 59 is made of soft and wear-resistant rubber material. The protective pad 59 protects the circuit board, thereby protecting the surface of the circuit board from being pinched.

[0059] In the first embodiment, specifically: a knob 60 is fixedly connected to the top of the threaded column 21 , and the knob 60 is used to facilitate an operator to rotate the threaded column 21 .

[0060] In Embodiment 1, specifically: the upper surfaces of the sol storage box 35 and the water storage tank 48 are fixedly connected with a liquid collecting hopper 61, the bottom of the liquid collecting hopper 61 is connected with a filter frame 62, and the inner wall of the filter frame 62 is installed with a filter element 63, and the spilled sol and cleaning water are collected by the liquid collecting hopper 61 above the sol storage box 35 and the water storage tank 48 respectively, and filtered by the filter element 63 in the filter frame 62, so that the sol is recovered into the sol storage box 35 for recycling, and the water is recovered into the water storage tank 48 for recycling.

[0061] Embodiment 2

[0062] like Figure 7 As shown, an embodiment of the present invention provides a method for removing glue of an automatic glue removal device for circuit board production, comprising the following steps:

[0063] Step 1: According to the width of the circuit board, control the synchronous electric cylinder 16 to push the telescopic column 18 to move, and adjust the distance between the two U-shaped frames 19 to adapt to the width of the circuit board; by adjusting the distance between the two U-shaped frames 19, it is convenient to clamp and fix circuit boards of different widths;

[0064] Step 2: Place the circuit board between the inner bottom wall of the U-shaped frame 19 and the clamping plate 22, and turn the knob 60 to rotate the threaded column 21 in the threaded hole 20, driving the clamping plate 22 to move downward, and clamping and fixing the circuit board; through the cooperation between the clamping plate 22 and the inner bottom wall of the U-shaped frame 19, the circuit board is clamped and fixed, preventing the circuit board from sliding during the debonding process, thereby ensuring the stable debonding process;

[0065] Step 3: After the circuit board is fixed, the conveying motor 28 is started, and the conveying motor 28 drives the driving wheel 30 to rotate. The driving wheel 30 drives the driven wheel 31 and the screw 25 to rotate through the chain 32, so that the sliding block 14 drives the circuit board to move forward;

[0066] Step 4: When the circuit board moves between the two sol spray heads 34, the sol delivery pump 36 delivers the sol in the sol storage box 35 to the sol spray head 34 through the connecting pipe 37 and the delivery branch pipe 38. The sol spray head 34 sprays the sol evenly on the upper and lower surfaces of the circuit board to wet and soften the glue residue on the circuit board. The sol is used to wet and soften the glue residue on the circuit board, so that the scraper 44 can scrape off the glue residue on the circuit board.

[0067] Step 5: After the circuit board passes through the sol spraying area, the adjusting electric cylinder 45 is started, and the adjusting electric cylinder 45 pushes the limiting slide plate 41 to move, driving the scraper 44 to approach the surface of the circuit board, and scraping the softened glue residue from the surface of the circuit board; wherein, the size of the scraper 44 can be changed according to the width of the circuit board;

[0068] Step 6: After the scraping is completed, the water pump 49 is started. The water pump 49 transports the water in the water tank 48 to the water spray head 47 through the water pipe 50 and the water branch pipe 51. The water spray head 47 sprays water to the circuit board to wash away the residual sol and impurities left by the scraping on the surface of the circuit board;

[0069] Step 7: After the circuit board is cleaned, the heater 54 is started. The hot air generated by the heater 54 is transported to the blower head 53 through the hot air main pipe 55 and the hot air branch pipe 56. The blower head 53 blows hot air to the circuit board to dry the surface of the circuit board.

[0070] Step 8. During the degumming process, the spilled sol and cleaning water are collected by the liquid collecting hopper 61 above the sol storage tank 35 and the water storage tank 48 respectively. The collected liquid flows into the filter frame 62. After being filtered by the filter element 63 in the filter frame 62, the sol is recovered into the sol storage tank 35 for recycling, and the water is recovered into the water storage tank 48 for recycling.

[0071] Embodiment 3

[0072] When it is necessary to remove glue from a circuit board with a width of 20 cm, the operator first sends a command to the synchronous electric cylinder 16 through the controller according to the width of the circuit board, and the synchronous electric cylinder 16 starts to work, pushing the telescopic column 18 to move in the limit cylinder 17, driving the U-shaped frame 19 to move. At this time, the displacement sensor data installed on the side plate 12 is observed. When the distance between the two U-shaped frames 19 is adjusted to slightly more than 20 cm, the synchronous electric cylinder 16 stops working;

[0073] Then, the operator places the circuit board on the inner bottom wall of the U-shaped frame 19, and turns the knob 60 on the top of the threaded column 21. The threaded column 21 rotates in the threaded hole 20, driving the clamping plate 22 to move downward under the guidance of the limiting slide column 58 and the limiting slide hole 57. When the clamping plate 22 contacts the circuit board and applies an appropriate clamping force, the operator stops turning the knob 60. At this time, the circuit board is firmly clamped between the U-shaped frame 19 and the clamping plate 22, and the protective pad 59 is used to protect the surface of the circuit board from being clamped.

[0074] The conveying motor 28 is started, and the conveying motor 28 drives the driving wheel 30 on the output shaft 29 to rotate at a speed of 10 revolutions per minute. The driving wheel 30 drives the driven wheel 31 and the screw rod 25 to rotate through the chain 32. The screw rod 25 is threadedly engaged with the screw hole 26 on the rear surface of the limiting slider 24. At the same time, the limiting slider 24 on the sliding block 14 slides in the limiting sliding groove 23 on the top wall of the sliding groove 13, so that the sliding block 14 drives the circuit board to move forward smoothly at a speed of 5 cm per minute.

[0075] When the circuit board moves between the two sol spray heads 34, the sol delivery pump 36 is started to deliver the sol in the sol storage box 35 to the sol spray head 34 at a flow rate of 200 ml per minute through the connecting pipe 37 and the delivery branch pipe 38. The sol spray head 34 evenly sprays the sol on the upper and lower surfaces of the circuit board, so that the glue residue on the circuit board is fully infiltrated and softened by the sol.

[0076] After the circuit board passes through the sol spraying area, it continues to move forward. When it reaches the position of the scraper 44, the adjusting electric cylinder 45 is started. The adjusting electric cylinder 45 pushes the limiting slide plate 41 to slide in the limiting groove 40 of the support plate 39 at a speed of 2 cm per second, driving the scraper 44 fixed in the mounting groove 42 on the limiting slide plate 41 by the screw 43 to approach the surface of the circuit board. The contact pressure between the scraper 44 and the surface of the circuit board is adjusted to 0.5 kg per square centimeter, and the softened glue residue is scraped off the surface of the circuit board. During the scraping process, the contact pressure between the scraper 44 and the circuit board is monitored in real time by a pressure sensor installed near the scraper 44. If there is any deviation, the working parameters of the adjusting electric cylinder 45 are adjusted in time.

[0077] After the scraping is completed, the circuit board continues to move under the water spray head 47. At this time, the water pump 49 is started. The water pump 49 delivers the water in the water tank 48 to the water spray head 47 at a flow rate of 500 ml per minute through the water pipe 50 and the water branch pipe 51. The water spray head 47 sprays water to the circuit board to wash away the residual sol and impurities left by the scraping on the surface of the circuit board. The water spray mode of the water spray head 47 adopts a pulse water spray with a pulse frequency of 5 times per second to improve the cleaning effect.

[0078] After the circuit board is cleaned, it continues to move forward to the bottom of the blowing head 53, and the heater 54 is started. The hot air temperature generated by the heater 54 is set to 60 degrees Celsius, and is transported to the blowing head 53 through the hot air main pipe 55 and the hot air branch pipe 56. The blowing head 53 blows hot air to the circuit board to quickly dry the surface of the circuit board. At this time, the wind speed sensor and temperature sensor installed near the blowing head 53 monitor the wind speed and temperature of the outlet air in real time to ensure that the circuit board can be dried under appropriate conditions;

[0079] During the entire degumming process, the spilled sol and cleaning water are collected by the liquid collecting hopper 61 above the sol storage box 35 and the water storage tank 48 respectively, and the collected liquid flows into the filter frame 62. After being filtered by the filter element 63 in the filter frame 62, the sol is recovered to the sol storage box 35 for recycling, and the water is recovered to the water storage tank 48 for recycling. The filtering effect of the filter element 63 is checked regularly. When the filtering efficiency of the filter element 63 drops to a certain level, the filter element 63 is replaced in time to ensure the effect of resource recovery and recycling.

[0080] In summary, the automatic degumming device and degumming method for circuit board production provided by the present invention can efficiently and stably degumming circuit boards, and has good resource recovery and recycling functions, effectively improving the quality and efficiency of circuit board production, and reducing production costs and environmental pollution.

[0081] Embodiment 4

[0082] like Figure 8-Figure 11As shown, the embodiment of the present invention provides an automatic glue removal device for circuit board production, including a glue removal component 220, the glue removal component 220 includes a bracket 221, a first motor 222, a bidirectional screw 223, a guide rod 224, a clamping plate 225, a linear guide rail 226, a second motor 227, a slider 228, an electric telescopic rod 229, a drive box 210, a third motor 211, a transmission wheel 212, a transmission belt 213 and a brush 214;

[0083] A first motor 222 is installed on the front surface of the bracket 221, and the output shaft of the first motor 222 is fixedly connected to one end of the bidirectional screw rod 223. The outer wall of the bidirectional screw rod 223 is symmetrically threaded with two clamping plates 225. The inner wall of the bracket 221 is symmetrically fixedly connected with a guide rod 224. A linear guide rail 226 is installed on the inner wall of the bracket 221. A second motor 227 is installed at one end of the linear guide rail 226. A slider 228 is slidably connected to the bottom of the linear guide rail 226. An electric telescopic rod 229 is installed at the bottom of the slider 228. The bottom end of the electric telescopic rod 229 is fixedly connected to a drive box 210. The drive box 210 is fixedly connected to the bottom of the drive box 210. 0 is installed with a third motor 211 on the top, and the inner wall of the driving box 210 is symmetrically and automatically connected with two transmission wheels 212, the output shaft of the third motor 211 is fixedly connected to one of the transmission wheels 212, and the outer wall of the transmission wheel 212 is sleeved with a transmission belt 213, and the bottom of the transmission wheel 212 is fixedly connected with a brush 214, and the degumming agent is sprayed by an atomizing nozzle 216, and the linear guide 226 is driven by the second motor 227 to work, so as to drive the slider 228 to move, and the height of the brush 214 is adjusted by the electric telescopic rod 229, and at the same time, the third motor 211 drives the brush 214 to rotate to clean the surface of the circuit board.

[0084] In this embodiment, specifically: the adhesive removal component 220 further includes a liquid dispensing tube 215 and an atomizing nozzle 216;

[0085] A liquid dispensing tube 215 is fixedly connected to one side of the driving box 210 , and atomizing nozzles 216 are evenly installed at the bottom of the liquid dispensing tube 215 . A liquid inlet pipe is connected to the top of the liquid dispensing tube 215 , and the liquid inlet pipe is connected to the degumming agent liquid supply system. The degumming agent is sprayed through the atomizing nozzle 216 .

[0086] In this embodiment, specifically: the clamping plate 225 is slidably connected to the outer wall of the guide rod 224, and the bidirectional screw rod 223 is driven to rotate by the first motor 222, and the circuit board is clamped by the clamping plate 225.

[0087] In this embodiment, specifically: the brush 214 is rotatably connected to the bottom of the driving box 210 , and the surface of the circuit board is cleaned by the rotation and movement of the brush 214 .

[0088] In this embodiment, specifically: a main body component 100 is disposed outside the adhesive removal component 220, and the main body component 100 includes a bottom plate 101 and a base 102;

[0089] The top of the bottom plate 101 is fixedly connected to the base 102 , and the bracket 221 is fixedly connected to the top of the base 102 . The base 102 can prevent the glue from overflowing.

[0090] In this embodiment, specifically: the inner wall of the base 102 is evenly installed with conveying wheels 103, and the conveying wheels 103 are driven by a motor. The driving method of the conveying wheels 103 is the same as the circuit board feeding mechanism in the prior art, which will not be repeated here.

[0091] In this embodiment, specifically: the bottom of the bottom plate 101 is connected to a drain pipe 104 , and the excess adhesive remover is discharged through the drain pipe 104 .

[0092] In this embodiment, specifically: support legs 105 are symmetrically fixedly connected to the bottom of the base plate 101, and the support legs 105 play a role of stable support.

[0093] When the present invention is working: the circuit board is transported by the conveying wheel 103. After the circuit board reaches the degumming station, the bidirectional screw 223 is driven to rotate by the first motor 222, the circuit board is clamped by the clamping plate 225, the degumming agent is sprayed by the atomizing nozzle 216, the linear guide 226 is driven to work by the second motor 227, driving the slider 228 to move, the height of the brush 214 is adjusted by the electric telescopic rod 229, and the third motor 211 drives the brush 214 to rotate, so as to clean the surface of the circuit board. There is no need for the staff to manually complete the degumming operation, which improves the degumming efficiency, ensures thorough degumming, and reduces the quality risk of circuit board production.

[0094] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An automatic glue removal device for circuit board production, characterized in that: The conveying assembly (1) comprises a support frame (11), a side plate (12), a sliding groove (13), a sliding block (14), a mounting hole (15), a synchronous electric cylinder (16), a limiting cylinder (17), a telescopic column (18), a U-shaped frame (19), a threaded hole (20), a threaded column (21), a clamping plate (22), a limiting sliding groove (23), a limiting sliding block (24), a screw rod (25), a screw hole (26), a motor bracket (27), a conveying motor (28), an output shaft (29), a driving wheel (30), a driven wheel (31) and a chain (32); Side plates (12) are welded to both sides of the upper surface of the support frame (11); a sliding groove (13) is provided in the middle of the adjacent side of the two side plates (12); a sliding block (14) is slidably connected to the inner side walls of the two sliding grooves (13); a mounting hole (15) is provided at the center of the adjacent side of the two sliding blocks (14); a synchronous electric cylinder (16) is fixedly connected to the inner side walls of the two mounting holes (15); and a synchronous electric cylinder (16) is fixedly connected to the adjacent side of the two sliding blocks (14). The outer sides of the holes (15) are fixedly connected to the limiting cylinder (17), the output ends of the two synchronous electric cylinders (16) are fixedly connected to the telescopic columns (18), the outer sides of the telescopic columns (18) are slidably connected to the inner side wall of the limiting cylinder (17), the adjacent sides of the two telescopic columns (18) are fixedly connected to the U-shaped frames (19), the upper surfaces of the two U-shaped frames (19) are provided with threaded holes (20) at the centers of the adjacent sides, and the inner side walls of the threaded holes (20) are threadedly connected to the threaded columns (19) 21), the bottom of the outer wall of the threaded column (21) is rotatably connected to a clamping plate (22), the inner top walls of the two sliding grooves (13) are each provided with a limit sliding groove (23), the center of the upper surface of the two sliding blocks (14) are each fixedly connected to a limit sliding block (24), the upper part of the rear surface of the two side plates (12) is penetrated by a screw rod (25), the center of the rear surface of the limit sliding block (24) is provided with a screw hole (26), the outer wall of the screw rod (25) is threadedly connected to the inner wall of the screw hole (26) The rear parts of the upper surfaces of the two side plates (12) are fixedly connected to a motor bracket (27), the inner side wall of the motor bracket (27) is fixedly connected to a conveying motor (28), the output end of the conveying motor (28) is fixedly connected to two driving wheels (30) via an output shaft (29), the rear parts of the outer side walls of the two screw rods (25) are fixedly connected to driven wheels (31), and the outer side walls of the two driving wheels (30) are rotationally connected to the outer side walls of the two driven wheels (31) via chains (32).

2. The automatic adhesive removal device for circuit board production according to claim 1, characterized in that: The upper and lower parts of the adjacent sides of the two side panels (12) are both fixedly connected to the front of the motor bracket (27) through a first mounting frame (33), and the rear part of the inner bottom wall of the support frame (11) is fixedly connected to a sol agent storage box (35), and a sol agent delivery pump (36) is installed at the bottom of one side of the sol agent storage box (35), and the liquid outlet end of the sol agent delivery pump (36) is connected to two delivery branch pipes (38) through a connecting pipe (37), and the liquid outlet ends of the two delivery branch pipes (38) are respectively connected to the liquid inlet ends of the two sol agent spray heads (34); the upper and lower parts of the adjacent sides of the two side panels (12) are close to the first mounting frame (33), and the rear part of the inner bottom wall of the support frame (11) is fixedly connected to a sol agent storage box (35), and the bottom part of one side of the sol agent storage box (35) is fixedly connected to the front of the motor bracket (27), and the upper and lower parts of the adjacent sides of the two side panels (12) are fixedly connected to the rear part of the inner bottom wall of the support frame (11), and a sol agent delivery pump (36) is installed at the bottom of one side of the sol agent storage box (35), and the liquid outlet end of the sol agent delivery pump (36) is connected to two delivery branch pipes (38) through a connecting pipe (37), and the liquid outlet ends of the two delivery branch pipes (38) are respectively connected to the liquid inlet ends of the two sol agent spray heads (34). The front part of the mounting frame (33) is fixedly connected to a support plate (39), the middle parts of the adjacent sides of the two support plates (39) are provided with a limiting groove (40), the inner side walls of the two limiting grooves (40) are slidably connected to a limiting slide plate (41), the middle parts of the adjacent sides of the two limiting slide plates (41) are provided with a mounting groove (42), the inner side walls of the mounting groove (42) are fixedly connected to a scraper (44) via a plurality of screws (43), and the middle parts of the distant sides of the two support plates (39) are fixedly connected to an adjusting electric cylinder (45), and the output end of the adjusting electric cylinder (45) is fixedly connected to the center of the upper surface of the limiting slide plate (41).

3. The automatic glue removal device for circuit board production according to claim 2 is characterized in that: The upper and lower parts of the adjacent sides of the two side panels (12) are fixedly connected to a water spray head (47) via a second mounting frame (46), the front part of the inner bottom wall of the support frame (11) is fixedly connected to a water storage tank (48), a water pump (49) is installed at the bottom of one side of the water storage tank (48), the liquid outlet end of the water pump (49) is connected to two water delivery branches (51) via a water delivery pipe (50), and the water outlet ends of the two water delivery branches (51) are respectively connected to the water inlet ends of the two water spray heads (47); the upper surfaces of the sol storage box (35) and the water storage tank (48) are fixedly connected to a liquid collecting hopper (61), the bottom of the liquid collecting hopper (61) is connected to a filter frame (62), and a filter element (63) is installed on the inner side wall of the filter frame (62).

4. The automatic adhesive removal device for circuit board production according to claim 3 is characterized by: The upper and lower parts of the adjacent sides of the two side panels (12) are fixedly connected to a blower head (53) via a third mounting frame (52) near the front of the second mounting frame (46); the inner bottom wall of the support frame (11) is fixedly connected to a heater (54) near the front of the water storage tank (48); the air outlet end of the heater (54) is connected to two hot air branch pipes (56) via a hot air main pipe (55); the air outlet ends of the two hot air branch pipes (56) are respectively connected to the air inlet ends of the two blower heads (53).

5. The automatic adhesive removal device for circuit board production according to claim 4, characterized in that: The front and rear portions of the upper surface of the U-shaped frame (19) near the threaded hole (20) are provided with limit sliding holes (57); the front and rear portions of the upper surface of the clamping plate (22) are fixedly connected to limit sliding columns (58); the outer wall of the limit sliding column (58) is slidably connected to the inner wall of the limit sliding hole (57); the inner bottom wall of the U-shaped frame (19) and the lower surface of the clamping plate (22) are fixedly connected to a protective pad (59); and the top of the threaded column (21) is fixedly connected to a knob (60).

6. A method for removing glue from an automatic glue removal device for circuit board production, applied to the automatic glue removal device for circuit board production as claimed in claim 5, characterized in that: The following steps are involved: Step 1: According to the width of the circuit board, control the synchronous electric cylinder (16) to push the telescopic column (18) to move, and adjust the distance between the two U-shaped frames (19) to adapt to the width of the circuit board; Step 2: Place the circuit board between the inner bottom wall of the U-shaped frame (19) and the clamping plate (22), and turn the knob (60) to rotate the threaded column (21) in the threaded hole (20), thereby driving the clamping plate (22) to move downward and clamp the circuit board; Step 3: After the circuit board is fixed, the conveying motor (28) is started, the conveying motor (28) drives the driving wheel (30) to rotate, and the driving wheel (30) drives the driven wheel (31) and the screw (25) to rotate through the chain (32), so that the sliding block (14) drives the circuit board to move forward; Step 4: When the circuit board moves between the two sol spray heads (34), the sol delivery pump (36) delivers the sol in the sol storage box (35) to the sol spray head (34) via the connecting pipe (37) and the delivery branch pipe (38), and the sol spray head (34) evenly sprays the sol onto the upper and lower surfaces of the circuit board to wet and soften the glue residue on the circuit board; Step 5: After the circuit board passes through the sol spraying area, the adjusting electric cylinder (45) is started, and the adjusting electric cylinder (45) pushes the limiting slide plate (41) to move, driving the scraper (44) close to the surface of the circuit board to scrape the softened glue residue from the surface of the circuit board; Step 6: After the scraping is completed, the water pump (49) is started, and the water pump (49) transports the water in the water tank (48) to the water spray head (47) through the water pipe (50) and the water branch pipe (51). The water spray head (47) sprays water toward the circuit board to wash away the residual sol and impurities left by the scraping on the surface of the circuit board; Step 7: After the circuit board is cleaned, the heater (54) is started, and the hot air generated by the heater (54) is transported to the blowing head (53) through the hot air main pipe (55) and the hot air branch pipe (56). The blowing head (53) blows hot air toward the circuit board to dry the surface of the circuit board; Step 8. During the degumming process, the spilled sol and cleaning water are collected by the liquid collecting hopper (61) above the sol storage tank (35) and the water storage tank (48), respectively. The collected liquid flows into the filter frame (62). After being filtered by the filter element (63) in the filter frame (62), the sol is recovered into the sol storage tank (35) for recycling, and the water is recovered into the water storage tank (48) for recycling.

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