Dispensing production equipment

Abstract

The application provides a coating and dispensing production equipment, which comprises, in sequence, an upper plate device, a front lifting device, a spraying device, a curing device, a plate turning device, a dispensing device, an inspection device, a rear lifting device and a lower plate device, and is connected to form an upper conveying line body. A return conveying line body is arranged below the upper conveying line body, and two ends of the return conveying line body are connected to the front lifting device and the rear lifting device respectively. The front lifting device comprises a front lifting frame, a front lifting mechanism arranged on the front lifting frame and a front conveying track arranged on the front lifting mechanism. The rear lifting device comprises a rear lifting frame, a rear lifting mechanism arranged on the rear lifting frame and a rear conveying track arranged on the rear lifting mechanism. The coating and dispensing production equipment can return the empty jig and the circuit board after turning through the front lifting device, the rear lifting device and the return conveying line body, and has high automation and high work efficiency.

Description

Technical Field

[0001] This invention relates to the field of spray coating and dispensing equipment, and particularly to a coating and dispensing production equipment. Background Technology

[0002] Currently, conformal coating is a necessary step in the production of circuit boards in the home appliance, communication equipment, and automotive electronics industries. Traditional circuit board coating equipment consists of individual spraying machines. After coating the front side, the empty fixture at the end of the line is manually moved back to the front, and then the fixture containing the circuit board is manually flipped and fed back into the spraying machine to coat the reverse side. Two workers are stationed at the end of the spraying line to manually inspect the conformal coating effect. After coating, adhesive dispensing is required, which necessitates manually transferring the product to another dispensing line for application. This type of single-unit equipment is simple, occupies little workshop space, and is widely used. However, its automation level is low, requiring many employees and frequent line transfers, resulting in low production efficiency.

[0003] Therefore, there is a need to provide a coating and dispensing production equipment to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides a coating and dispensing production equipment to solve the problems of low automation, high staff requirements, frequent line changes, and low production efficiency in existing spray coating and dispensing equipment.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a coating and dispensing production equipment, which includes an upper plate device, a front lifting device, a spraying device, a curing device, a flipping device, a dispensing device, an inspection device, a rear lifting device, and a lower plate device connected in sequence, and connected to form an upper conveyor line. The coating and dispensing production equipment also includes a return conveyor line, which is disposed below the upper conveyor line, and the two ends of the return conveyor line are respectively connected to the front lifting device and the rear lifting device.

[0006] The front lifting device includes a front lifting frame, a front lifting mechanism mounted on the front lifting frame, and a front conveying track mounted on the front lifting mechanism. The front conveying track connects to the upper conveyor line or the return conveyor line via lifting. The rear lifting device includes a rear lifting frame, a rear lifting mechanism mounted on the rear lifting frame, and a rear conveying track mounted on the rear lifting mechanism. The rear conveying track connects to the upper conveyor line or the return conveyor line via lifting.

[0007] In this invention, the front lifting device is further provided with a front lifting empty fixture detection mechanism, a first feeding sensor, and a first discharging sensor. The first feeding sensor is located at one end of the front lifting device near the upper plate device and is used to sense the fixture conveyed by the upper plate device. The first discharging sensor is located at one end of the front lifting device near the spraying device and is used to sense the conveying of the fixture on the front lifting device to the spraying device and to sense the conveying of the fixture from the return conveyor line to the front lifting device. The front lifting empty fixture detection mechanism is located on one side of the front lifting device and is used to detect whether the fixture from the return conveyor line carries a product. The front lifting device conveys an empty fixture to the upper plate device or a fixture carrying a product to the spraying device according to the signal from the front lifting empty fixture detection mechanism.

[0008] The rear lifting device is also equipped with a spraying detection mechanism, a second feeding sensor, and a second discharging sensor. The second feeding sensor is located at one end of the rear lifting device near the inspection device and is used to sense the fixture conveyed by the inspection device and to sense the conveying of the fixture on the rear lifting device to the return conveyor line. The second discharging sensor is located at one end of the rear lifting device near the lower plate device and is used to sense the conveying of the fixture between the rear lifting device and the lower plate device. The spraying detection mechanism is located on one side of the rear lifting device and is used to detect whether the product on the fixture from the inspection device has been sprayed. The rear lifting device conveys empty fixtures and fixtures that have not been sprayed to the return conveyor line, or conveys fixtures carrying products and having been sprayed to the lower plate device, according to the signal from the spraying detection mechanism.

[0009] The lowering plate device includes a rear lifting empty fixture detection mechanism, a third feeding sensor, and a lowering plate conveying track. The third feeding sensor is located at one end of the lowering plate conveying track near the rear lifting device and is used to sense the conveying of fixtures from the rear lifting device to the lowering plate device and to sense the conveying of empty fixtures from the lowering plate device to the rear lifting device. The rear lifting empty fixture detection mechanism is located on one side of the lowering plate conveying track and is used to detect whether the fixtures on the lowering plate conveying track are carrying products.

[0010] The upper plate device includes an upper plate frame, an upper plate conveying track, an upper plate positioning sensor, and an upper plate discharge sensor. The upper plate conveying track is disposed on the upper plate frame. The upper plate positioning sensor and the upper plate discharge sensor are arranged sequentially along the conveying direction of the upper plate conveying track. The upper plate positioning sensor is used to sense the fixture being conveyed on the upper plate device to control the fixture to stop at a set position on the upper plate device. The upper plate discharge sensor is used to sense the conveying of the fixture on the upper plate device to the front lifting device and to sense the conveying of an empty fixture on the front lifting device to the upper plate device.

[0011] In this invention, the coating and dispensing production equipment further includes a first plate-crossing connection device, a second plate-crossing connection device, and a third plate-crossing connection device. The first plate-crossing connection device is disposed between the front lifting device and the spraying device, the second plate-crossing connection device is disposed between the spraying device and the curing device, and the third plate-crossing connection device is disposed between the flipping device and the dispensing device.

[0012] In this invention, the spraying device includes a spraying conveyor track for carrying products, and a nozzle and a spraying information reading mechanism disposed above the spraying conveyor track.

[0013] The dispensing device includes a dispensing platform for carrying the product, and a dispensing head and a dispensing information reading mechanism disposed above the dispensing platform.

[0014] The flipping device includes a flipping conveyor track for clamping and conveying products, and a flipping information reading mechanism disposed above the flipping conveyor track.

[0015] The inspection device includes an inspection platform for carrying the product, and a detection camera and an inspection information reading mechanism mounted above the inspection platform.

[0016] Furthermore, the upper plate conveying track, the front conveying track, the spraying conveying track, the dispensing platform, the flipping conveying track, the inspection platform, the rear conveying track, and the return conveying line are all connected to a width-adjusting screw. The width-adjusting motor is connected to the width-adjusting screw to drive the width-adjusting screw to rotate. All the width-adjusting motors are electrically connected to the same control device.

[0017] In this invention, the front lifting device includes multiple sets of front conveying tracks, which are arranged in parallel at different heights of the front lifting mechanism. The return conveyor line includes a return conveyor positioning sensor and a front lifting empty fixture detection mechanism. Both the return conveyor positioning sensor and the front lifting empty fixture detection mechanism are located at one end of the return conveyor line near the front lifting device, with the return conveyor positioning sensor being closer to the front lifting device than the front lifting empty fixture detection mechanism. The control device controls the return conveyor line to stop based on the sensing signal from the return conveyor positioning sensor. The front lifting empty fixture detection mechanism is used to detect whether the fixture of the stopped return conveyor line carries a product.

[0018] In this invention, the spraying device further includes an outer casing, a base, a spraying conveyor track, a slide plate, a connecting frame, and a sealing curtain. The sealing curtain includes multiple sealing curtain units arranged in parallel. The outer casing surrounds the top of the base. The spraying conveyor track is located inside the outer casing. The two ends of the outer casing are provided with openings for product conveying. The top of each sealing curtain unit is connected to the top of the opening. The bottom of each sealing curtain unit is provided with a first magnet. The slide plate is movably disposed on the inner wall of the outer casing and near the bottom of the opening. The slide plate is provided with multiple second magnets for positioning and magnetic attraction with the first magnet.

[0019] The fixture is equipped with an extrusion block. Both ends of the connecting frame are connected to extension plates. The two extension plates are vertically slidably connected to both sides of the spraying conveyor track. The bottom end of the connecting frame is connected to the base through an elastic element. The top end of the extension plate is equipped with a pressure block. The pressure block is located above the sliding track of the extrusion block. The slide plate is connected to the connecting frame. The extrusion block presses the pressure block upward, thereby driving the slide plate to slide upward, so that the second magnet and the first magnet are magnetically attracted, thereby causing the multiple sealing curtain units to seal the opening.

[0020] The bottom end of the first magnet is connected to a positioning plate made of plastic, and a positioning groove is provided through the bottom end of the positioning plate. The sliding plate is provided with a positioning protrusion for matching the positioning groove.

[0021] Furthermore, the side of the pressure block closest to the extrusion block is provided with rolling balls.

[0022] In this invention, the flipping device further includes a flipping frame, a fixed plate, a movable plate, a slide rod, a drive rod, and a flipping conveying track. The two fixed plates are rotatably connected to both sides of the flipping frame. The slide rod and the drive rod are connected between the two fixed plates. The movable plate is arranged parallel to the fixed plate and is slidably connected to the slide rod. The movable plate is driven to slide by the drive rod. The flipping conveying track includes a first track and a second track that match each other. The first track is arranged inside one of the fixed plates, and the second track is arranged on the side of the movable plate near the first track.

[0023] In this invention, the flipping device further includes two sets of limiting components. The limiting components include a cylinder, a transmission lever, and a first limiting block. A second limiting block is provided at both ends of the outer side of the fixed plate. The first limiting block is rotatably connected to the flipping frame. The output end of the cylinder is rotatably connected to the first limiting block through the transmission lever to control the rotation of the first limiting block to contact the second limiting block or to avoid contact with the second limiting block.

[0024] In this invention, the spraying device further includes a spraying bracket and a crossbeam, the crossbeam being slidably connected to the spraying bracket, a plurality of the spray nozzles being slidably connected to the crossbeam, and a scale being provided on the crossbeam.

[0025] In this invention, the inspection device also includes lamps, two of which are respectively disposed on both sides of the inspection platform. Each lamp includes a lamp holder and a lamp body rotatably connected to the lamp holder.

[0026] Compared with the prior art, the advantages of this invention are as follows: The coating and dispensing production equipment of this invention can return empty fixtures and flipped circuit boards through a front lifting device, a rear lifting device, and a return conveyor line, resulting in a high degree of automation and high work efficiency. Furthermore, it can automatically perform quality checks on spraying and dispensing, saving labor costs and improving product quality. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of the present invention.

[0028] Figure 1 This is a front view of the coating and dispensing production equipment of the present invention.

[0029] Figure 2 This is a top view of the coating and dispensing production equipment of the present invention.

[0030] Figure 3This is a schematic diagram of the spraying device of the coating and dispensing production equipment of the present invention.

[0031] Figure 4 for Figure 3 The diagram shows the structure of the spraying device equipped with a sealing curtain.

[0032] Figure 5 for Figure 3 The schematic diagram of the spraying device in the image shows the structure without the outer casing.

[0033] Figure 6 for Figure 5 The diagram shows the structure of the connecting frame and the slide plate.

[0034] Figure 7 for Figure 4 A partial structural diagram of the bottom of the sealing curtain unit.

[0035] Figure 8 This is a schematic diagram of the flip-plate device of the coating and dispensing production equipment of the present invention.

[0036] Figure 9 for Figure 8 A schematic diagram of the limiting component of the flip-plate device.

[0037] Figure 10 This is a schematic diagram of the inspection device of the coating and dispensing production equipment of the present invention. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] The directional terms mentioned in this invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this invention, and are not intended to limit this invention.

[0040] The terms "first" and "second" used in the terminology of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as limiting the order of events.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Existing circuit board coating equipment consists of individual coating units. After coating the front side, the empty fixture at the end of the line must be manually moved back to the front, and then the fixture containing the circuit board is manually flipped over and fed back into the coating equipment to coat the back side. Two workers are stationed at the end of the coating line to manually inspect whether the conformal coating effect is up to standard.

[0043] After spraying, adhesive dispensing is required. This dispensing process necessitates manual transfer of the product to another dispensing line for final application. While this single-unit equipment is simple, occupies little workshop space, and is widely used, its low level of automation necessitates a large workforce and frequent line transfers, resulting in low production efficiency.

[0044] The following is a preferred embodiment of a coating and dispensing production equipment provided by the present invention that can solve the above-mentioned technical problems.

[0045] Please refer to Figure 1 and Figure 2 ,in Figure 1 This is a front view of the coating and dispensing production equipment of the present invention. Figure 2 This is a top view of the coating and dispensing production equipment of the present invention.

[0046] In the diagram, units with similar structures are represented by the same labels.

[0047] The present invention provides a coating and dispensing production equipment, which includes an upper plate device 11, a front lifting device 12, a spraying device 13, a curing device 14, a flipping device 15, a dispensing device 16, an inspection device 17, a rear lifting device 18, and a lower plate device 19 connected in sequence to form an upper conveyor line. The coating and dispensing production equipment also includes a return conveyor line 1A, which is located below the upper conveyor line, and both ends of the return conveyor line 1A are connected to the front lifting device 12 and the rear lifting device 18, respectively. Figure 1 The return transport line 1A is shown in dashed lines. The return transport line 1A is formed by connecting multiple return transport tracks. When the fixture approaches the front lifting device 12 and stops the front section of the return transport track, the rear section of the return transport track can continue to run for transport, so as to improve efficiency.

[0048] The front lifting device 12 includes a front lifting frame 121, a front lifting mechanism 122 mounted on the front lifting frame 121, and a front conveying track 123 mounted on the front lifting mechanism 122. The front conveying track 123 connects to the upper conveying line or the return conveying line 1A through lifting. The rear lifting device 18 includes a rear lifting frame 181, a rear lifting mechanism 182 mounted on the rear lifting frame 181, and a rear conveying track 183 mounted on the rear lifting mechanism 182. The rear conveying track 183 connects to the upper conveying line or the return conveying line 1A through lifting. The rear lifting device 18 lifts and transports the circuit board that needs to be sprayed on the reverse side on the upper conveyor line and the empty fixture after the circuit board is removed from the lower plate device 19 to the return conveyor line 1A. The front lifting device 12 receives the empty fixture or the fixture carrying the circuit board on the return conveyor line 1A, transports the empty fixture to the upper plate device 11, and transports the fixture carrying the circuit board to the spraying device 13. The system has a high degree of automation and high work efficiency.

[0049] It should be noted that both the front lifting mechanism 122 and the rear lifting mechanism 182 can adopt linear drive mechanisms in the prior art, such as those used in conjunction with... Figure 8 The flip-plate device shown is a similar mechanism that uses a sliding rod and a drive rod to lift or lower the front conveyor track 123 or the rear conveyor track 183. No detailed description is provided here.

[0050] Please refer to Figure 2 In this embodiment, the front lifting device 12 is further provided with a front lifting empty fixture detection mechanism 125, a first feed sensor 124, and a first discharge sensor 126. The first feed sensor 124 is located at one end of the front lifting device 12 near the upper plate device 11 and is used to sense the fixture conveyed by the upper plate device 11. The first discharge sensor 126 is located at one end of the front lifting device 12 near the spraying device 13 and is used to sense the conveying of the fixture on the front lifting device 12 to the spraying device 13, and to sense the conveying of the fixture from the return conveyor line 1A to the front lifting device 12. The front lifting empty fixture detection mechanism 125 is located on one side of the front lifting device 12 and is used to detect whether the fixture from the return conveyor line 1A carries a product. The front lifting device 12 conveys the empty fixture to the upper plate device 11 or the fixture carrying the product to the spraying device 13 according to the signal from the front lifting empty fixture detection mechanism 125.

[0051] The rear lifting device 18 is also equipped with a spraying detection mechanism 184, a second feed sensor 185, and a second discharge sensor 186. The second feed sensor 185 is located at one end of the rear lifting device 18 near the inspection device 17, and is used to sense the fixture conveyed by the inspection device 17 and to sense the conveying of the fixture on the rear lifting device 18 back to the conveyor line 1A. The second discharge sensor 186 is located at one end of the rear lifting device 18 near the lower plate device 19, and is used to sense the conveying of the fixture on the rear lifting device 18 to the lower plate device 19. The spraying detection mechanism 184 is located on one side of the rear lifting device 18, and is used to detect whether the product on the fixture from the inspection device 17 has been sprayed. The rear lifting device 18 conveys empty fixtures and fixtures that have not been sprayed back to the conveyor line 1A according to the signal from the spraying detection mechanism 184, or conveys fixtures carrying products and having been sprayed to the lower plate device 19.

[0052] The lowering device 19 includes a lowering frame 194, a rear lifting empty fixture detection mechanism 193, a third feed sensor 192, and a lowering conveyor track 191, all mounted on the lowering frame 194. The third feed sensor 192 is located at one end of the lowering conveyor track 191 near the rear lifting device 18, and is used to sense the conveying of fixtures from the rear lifting device 18 to the lowering device 19, and to sense the conveying of empty fixtures from the lowering device 19 to the rear lifting device 18. The rear lifting empty fixture detection mechanism 193 is located on one side of the lowering conveyor track 191 and is used to detect whether the fixtures on the lowering conveyor track 191 are carrying products. When an empty fixture is detected on the lowering conveyor track 191, the control device controls the rear lifting device 18 to dock with the lowering conveyor track 191 to receive the empty fixture.

[0053] The unloading device 19 also includes a third discharge sensor 195, which is located at the end of the unloading frame 194 away from the inspection device 17. This sensor can sense the circuit board and control the unloading device 19 to stop conveying. It can also be used to connect with equipment for subsequent processes.

[0054] The loading device 11 includes a loading frame 111, a loading conveyor track 112, a loading positioning sensor 114, and a loading discharge sensor 116. The loading conveyor track 112 is mounted on the loading frame 111. The loading positioning sensor 114 and the loading discharge sensor 116 are sequentially arranged along the conveying direction of the loading conveyor track 112. The loading positioning sensor 114 senses the fixture being conveyed on the loading device 11 to control the fixture to stop at a set position on the loading device 11, so that the circuit board can be placed onto the fixture manually or mechanically. The loading discharge sensor 116 senses the conveying of the fixture on the loading device 11 to the forward lifting device 12, and senses the conveying of an empty fixture on the forward lifting device 12 to the loading device 11.

[0055] In addition, the upper plate device 11 can also be equipped with an upper plate feeding sensor 113 and an upper plate empty fixture detection mechanism 115. The upper plate feeding sensor 113 is located at the end of the upper plate frame 111 away from the spraying device 13, and can be used to connect with the equipment of the preceding process to further improve the degree of automated manufacturing. The upper plate empty fixture detection mechanism 115 is located between the upper plate positioning sensor 114 and the upper plate discharge sensor 116, and is used to confirm whether the fixture on the upper plate device 11 is carrying products to avoid conveying errors.

[0056] Please refer to Figure 1 In this embodiment, the coating and dispensing production equipment further includes a first plate-connecting device 1B, a second plate-connecting device 1C, and a third plate-connecting device 1D. The first plate-connecting device 1B is located between the front lifting device 12 and the spraying device 13, the second plate-connecting device 1C is located between the spraying device 13 and the curing device 14, and the third plate-connecting device 1D is located between the flipping device 15 and the dispensing device 16. Since the processes of spraying, curing, and dispensing are time-consuming, the plate-connecting devices can buffer the fixtures carrying the products, allowing the products to be quickly fed into the corresponding equipment after the spraying, curing, or dispensing operations are completed. The first plate-connecting device 1B, the second plate-connecting device 1C, and the third plate-connecting device 1D are all existing conveyor structures such as chains or belts.

[0057] It should be noted that the first plate connecting device 1B, the second plate connecting device 1C, and the third plate connecting device 1D are all equipped with corresponding sensors to sense the position of the fixture, thereby controlling the start and stop of the first plate connecting device 1B, the second plate connecting device 1C, and the third plate connecting device 1D.

[0058] In this embodiment, the curing device 14 includes a UV curing lamp 141 for curing the coating on the sprayed circuit board by irradiation (the UV curing lamp 141 is located inside the housing). Figure 2 The UV curing lamp 141 is indicated by a dashed line (UV curing lamp is a type of ultraviolet lamp). The curing device 14 is also equipped with a cooling mechanism 142 for dissipating heat from the UV curing lamp 141.

[0059] In this embodiment, the spraying device 13 includes a spraying conveyor track for carrying the product, a nozzle 139 disposed above the spraying conveyor track, and a spraying information reading mechanism 13A. After the spraying information reading mechanism 13A reads the information code on the circuit board, the software of the spraying device 13 immediately retrieves the spraying trajectory program of the current circuit board and executes the spraying trajectory program by controlling the movement of the nozzle 139. It should be noted that the nozzle 139 in this embodiment is connected to the XYZU motion component to execute various movements. The XYZU motion component is prior art, such as the motion structure of a multi-axis robot in the prior art, and will not be described in detail here.

[0060] The dispensing device 16 includes a dispensing platform for carrying the product, a dispensing head and a dispensing information reading mechanism 161 disposed above the dispensing platform. After the dispensing information reading mechanism 161 reads the information code on the circuit board, the software of the dispensing device 16 will immediately call up the dispensing trajectory program of the current circuit board and execute the dispensing trajectory program by controlling the movement of the dispensing head.

[0061] The flipping device 15 includes a flipping conveyor track for clamping and conveying products, and a flipping information reading mechanism disposed above the flipping conveyor track. The flipping information reading mechanism can read the information code on the circuit board. The flipping device 15 determines whether to flip the flipping conveyor track based on the information read by the flipping information reading mechanism.

[0062] The inspection device 17 includes an inspection platform for carrying the product, a detection camera 172 and an inspection information reading mechanism 171 mounted above the inspection platform. After the inspection information reading mechanism 171 reads the information code on the circuit board, the inspection software of the inspection device 17 will immediately recall the corresponding spraying effect inspection trajectory program and control the detection camera 172 to execute the spraying effect inspection trajectory program for shooting and inspection.

[0063] It should be noted that the information code can be set on the surface of the fixture. The dispensing conveyor track is the dispensing platform that supports the fixture, and the inspection conveyor track of the inspection device 17 is the inspection platform that supports the fixture.

[0064] Furthermore, the upper conveyor track 112, front conveyor track 123, spraying conveyor track, dispensing platform, flip conveyor track, inspection platform, rear conveyor track 183, and return conveyor line 1A are all connected to width-adjusting screws. Width-adjusting motors are connected to these screws to drive their rotation. All width-adjusting motors are electrically connected to the same control device. A handheld barcode scanner is connected to the main touchscreen of the control device. When processing products of different specifications, the fixture widths differ. Simply scanning the information code on the fixture switches all conveyor tracks along the entire line, including the lower return conveyor line 1A, to their corresponding width. This results in a high degree of automation and very convenient operation. It should also be noted that in this embodiment, the upper conveyor track 112, front conveyor track 123, spraying conveyor track, dispensing platform, flip conveyor track, inspection platform, rear conveyor track 183, and return conveyor line 1A can all utilize existing conveyor structures such as chains or belts.

[0065] Optionally, in this embodiment, the front lifting device 12 includes multiple sets of front conveying tracks 123, which are arranged in parallel at different heights of the front lifting mechanism 122. The return conveyor line 1A includes a return conveyor positioning sensor and a front lifting empty fixture detection mechanism 125. Both the return conveyor positioning sensor and the front lifting empty fixture detection mechanism 125 are located at one end of the return conveyor line 1A near the front lifting device 12, with the return conveyor positioning sensor being closer to the front lifting device 12 than the front lifting empty fixture detection mechanism 125. The control device controls the return conveyor line 1A to stop based on the sensing signal from the return conveyor positioning sensor. The front lifting empty fixture detection mechanism 125 is used to detect whether the fixture on the returned conveyor line 1A after it stops carries a product. This allows the front lifting mechanism 122 to receive and transfer multiple sets of fixtures with each lift.

[0066] Preferably, the front lifting mechanism 122 is provided with two sets of front conveying tracks 123 at different height positions. Empty jigs and jigs carrying products on the return conveyor line 1A are spaced apart. Each time the front lifting mechanism 122 descends, one of the two sets of front conveying tracks 123 receives an empty jig and the other receives a jig carrying products. Then the front lifting mechanism 122 rises, which can convey the empty jig to the upper plate device 11 and the jig carrying products to the first plate connecting device 1B, making the operation more efficient.

[0067] It should be noted that individual spraying equipment has low production efficiency and slow operation speed. Individual circuit boards are manually fed into or removed from the equipment at a very slow pace. Therefore, it is convenient to install a closed door on the spraying equipment, which can be manually closed during the spraying process. However, in the production of high-efficiency automated production lines, circuit boards are frequently and rapidly input and output. Therefore, spraying equipment typically only has a simple accordion cover or a highly movable rubber curtain at the input and output ports. These structures have poor sealing effects, causing the sprayed material to easily diffuse into the external space, affecting the health of the operators.

[0068] Please refer to Figures 3-6 In this embodiment, the spraying device 13 further includes an outer casing 132, a base 131, a spraying conveyor track 133, a slide plate 135, a connecting frame 136, and a sealing curtain 134. The sealing curtain 134 includes a plurality of sealing curtain units 1343 arranged in parallel. The outer casing 132 surrounds the top of the base 131. The spraying conveyor track 133 is located inside the outer casing 132. The two ends of the outer casing 132 are provided with openings 1321 for product conveying. The top of the sealing curtain unit 1343 is connected to the top of the opening 1321. The bottom of the sealing curtain unit 1343 is provided with a first magnet 1341. The slide plate 135 is movably disposed on the inner wall of the outer casing 132 and close to the bottom of the opening 1321. The slide plate 135 is provided with a plurality of second magnets 1351 for positioning and magnetic attraction with the first magnet 1341.

[0069] The fixture is equipped with an extrusion block. Both ends of the connecting frame 136 are connected to extension plates 1361. The two extension plates 1361 are vertically slidably connected to both sides of the spraying conveyor track 133. The bottom end of the connecting frame 136 is connected to the base 131 through an elastic element 13C. The top end of the extension plate 1361 is equipped with a pressure block 1362. The pressure block 1362 is located above the sliding track of the extrusion block. The slide plate 135 is connected to the connecting frame 136. The extrusion block squeezes the pressure block 1362 upward, thereby driving the slide plate 135 to slide upward, so that the second magnet 1351 and the first magnet 1341 are magnetically attracted, so that multiple sealing curtain units 1343 can be stably docked and arranged, thereby making the sealing curtain 134 seal the opening 1321, with a good sealing effect.

[0070] In this embodiment, the elastic element 13C is specifically configured such that a pressure plate 13B is connected to the base 131, the pressure plate 13B is located above the connecting frame 136, and the elastic element 13C is limited between the connecting frame 136 and the pressure plate 13B.

[0071] It should be noted that the extrusion block and the pressure block 136 only come into contact when the fixture is conveyed to the spraying position. Therefore, when the fixture is conveyed at the opening 1321, the connecting frame 136 moves downward under the pressure of the elastic member 13C, causing the slide plate 135 to slide away from the first magnet 1341. As a result, the fixture can pass through the sealing curtain very easily and smoothly with very little resistance.

[0072] For preferred options, please refer to [the provided text]. Figure 6 and Figure 7 In this embodiment, the bottom end of the first magnet 1341 is connected to a positioning plate 1342 made of plastic. A positioning groove 13421 is provided through the bottom end of the positioning plate 1342. The sliding plate 135 is provided with a positioning protrusion 1352 for matching the positioning groove 13421. There is no magnetic attraction between the positioning plate 1342 and the sliding plate 135, which facilitates positioning and engagement. A certain magnetic attraction is maintained between the sliding plate 135 and the first magnet 1341, which can ensure the stable docking arrangement between multiple sealing curtain units 1343 and facilitate the disengagement of the sliding plate from the sealing curtain 134.

[0073] In this embodiment, the positioning groove 13421 is preferably a V-shaped groove, which facilitates docking with the positioning protrusion 1352. The positioning protrusion 1352 and the second magnet 1351 are disposed on the side surface of the slide plate 135, and the first magnet 1341 is disposed on the side surface of the sealing curtain unit 1343. The side surface of the slide plate 135 and the side surface of the sealing curtain are in surface contact for positioning.

[0074] Preferably, the bottom of the positioning plate 1342 is covered with a rubber layer 1345, which is relatively soft to avoid scratching the circuit board.

[0075] In this invention, cylindrical bar magnets 1344 are embedded on both sides of the sealing curtain unit 1343, and the bar magnets 1344 are spaced a predetermined distance from the first magnet 1341. This enhances the sealing performance between adjacent sealing curtain units 1343. Furthermore, because the bar magnets 1344 are cylindrical, adjacent bar magnets 1344 form a linear magnetic attraction, which is not too strong, facilitating separation and allowing the fixture to pass through the sealing curtain 134.

[0076] Preferably, ball bearings are rolled on the side of the pressure block 1362 near the extrusion block to reduce friction between the pressure block 1362 and the fixture, thus avoiding affecting the conveying of the fixture. The force exerted by the pressure block on the fixture is downward, which also makes the fixture contact the spray conveying track 133 more tightly, which is beneficial for conveying.

[0077] In this embodiment, the spraying device 13 further includes a spraying bracket 137 and a crossbeam 138. The crossbeam 138 is slidably connected to the spraying bracket 137, and a plurality of nozzles 139 are slidably connected to the crossbeam 138. A scale 1381 is provided on the crossbeam 138 to facilitate precise adjustment of the position of the nozzles 139.

[0078] Please refer to Figure 8 The flipping device 15 in this embodiment further includes a flipping frame 151, a fixed plate 152, a movable plate 153, a slide rod 154, a drive rod 155, and a flipping conveyor track. Two fixed plates 152 are rotatably connected to both sides of the flipping frame 151 and driven to rotate by a flipping motor 158. The slide rod 154 and drive rod 155 are connected between the two fixed plates 152. The movable plate 153 is parallel to the fixed plates 152 and slidably connected to the slide rod 154. The movable plate 153 is also driveably connected to the drive rod 155 to be driven to slide. The flipping conveyor track includes a first track 1561 and a second track 1562 that match each other. The first track 1561 is located inside a fixed plate 152, and the second track 1562 is located on the side of the movable plate 153 near the first track 1561. By rotating the drive rod 155, the movable plate 153 is moved, adjusting the distance between the first track 1561 and the second track 1562. In this embodiment, the first track 1561 and the second track 1562 both have conveyor chains at the top and bottom, and the fixture is clamped between the upper and lower conveyor chains. By driving the fixed plate 152 to rotate, the entire rotating conveyor track is rotated.

[0079] Please refer to Figure 9In this embodiment, the flipping device 15 also includes two sets of limiting components. The limiting components include a cylinder 1571, a transmission lever 1572, and a first limiting block 1573. Second limiting blocks 1521 are provided at both ends of the outer side of the fixed plate 152. The first limiting block 1573 is rotatably connected to the flipping frame 151. The output end of the cylinder 1571 is rotatably connected to the first limiting block 1573 through the transmission lever 1572, so as to control the rotation of the first limiting block 1573 to contact the second limiting block 1521, thereby limiting the rotation of the fixed plate 152, keeping it stable, ensuring the accurate input and output of the flipping conveyor track, or controlling the rotation of the first limiting block 1573 to avoid the second limiting block 1521, so that the flipping motor 158 controls the rotation of the fixed plate 152.

[0080] Please refer to Figure 10 In this embodiment, the inspection device 17 also includes lamps. Two lamps are respectively arranged on both sides of the inspection platform. Each lamp includes a lamp holder 1731 and a lamp body 1732 rotatably connected to the lamp holder 1731, and the angle of the lamp body 1732 illuminating the lamp can be adjusted. The detection camera is connected to the moving module, which drives the detection camera to move so as to detect different positions on the circuit board.

[0081] The working principle of the coating and dispensing production equipment in this embodiment will be explained below. For clarity, the two sides of the circuit board are referred to as side A and side B. The working principle of this invention is as follows: First, a barcode scanner connected to the control device scans the information code on side A of the circuit board. At this time, the control device adjusts all the conveyor tracks to move to a width corresponding to the specifications of the fixture.

[0082] Place the circuit board A side up on the empty fixture positioned and stopped on the upper plate device 11, and then press the release button. The upper plate conveying track 112 will transport the fixture carrying the circuit board to the forward lifting device 12. During the transport process, it will pass through the upper plate discharge sensor 116, the first feed sensor 124, and the first discharge sensor 126, so that the start and stop of the upper plate conveying track 112 and the forward conveying track 123 can be controlled by sensing signals. When the fixture is sensed by the first discharge sensor 126, the forward lifting device 12 will stop transporting. After the first plate connecting device 1B gives a signal that it needs to be fed, the forward lifting device 12 will transport the fixture to the first plate connecting device 1B. Similarly, after the spraying device 13 gives a signal that it needs to be fed, the forward lifting device 12 will transport the fixture to the spraying device 13.

[0083] Each time the fixture is transported from one device to another, a corresponding sensor detects the fixture and provides feedback on the transport position. The detection process will not be described in detail hereafter.

[0084] After the fixture enters the spraying device 13, the spraying information reading mechanism 13A reads the information code on the circuit board, and then the software of the spraying device 13 immediately retrieves the spraying trajectory program of the current circuit board and executes the spraying operation by controlling the movement of the nozzle 139.

[0085] After the coating is completed, the fixture will be conveyed to the second board connection device 1C. After the curing device 14 gives the signal that the material needs to be fed, the fixture enters the curing device 14. After being irradiated by ultraviolet light, the coating on the circuit board will gradually cure. After curing is completed, the fixture will be conveyed to the flipping device 15.

[0086] After the fixture enters the set position of the flipping device 15, the conveying stops. The flipping information reading mechanism reads the information code on the circuit board to confirm whether to flip it. If the circuit board needs to be sprayed or glued on both sides, then it is on side A, so the circuit board needs to be flipped so that side B is facing up. The cylinder 1571 drives the first limit block 1573 and the second limit block 1521 to avoid each other, and then the flipping motor 158 controls the fixed plate 152 to rotate, so that the fixture flips 180 degrees. After the flip is completed, the cylinder 1571 drives the first limit block 1573 to contact the second limit block 1521, so that the fixed plate 152 remains stable. Then the flipping conveyor rail conveys the fixture to the third plate connecting device 1D.

[0087] After the dispensing device 16 sends a signal indicating that material needs to be fed, the third board-connecting device 1D conveys the fixture to the dispensing device 16. The fixture stops at the dispensing position, and the dispensing information reading mechanism 161 reads the information code on the circuit board. The software of the dispensing device 16 immediately retrieves the dispensing trajectory program for the current circuit board and executes the dispensing operation by controlling the movement of the dispensing head. After dispensing is complete, the fixture is conveyed to the inspection device 17.

[0088] The fixture enters the set position of the inspection device 17 and stops. The inspection information reading mechanism 171 reads the information code on the circuit board. The inspection software of the inspection device 17 immediately calls up the corresponding spraying and dispensing effect inspection trajectory program and controls the detection camera 172 to execute the spraying effect inspection trajectory program to take pictures and detect. If the inspection is not qualified, an alarm will be set. If it is qualified, the fixture will be transported to the rear lifting device 18.

[0089] After the fixture reaches the set position on the lifting device 18, it stops. The spraying detection mechanism 184 detects whether the B side of the circuit board is sprayed with a coating. Since the A side of the circuit board was sprayed before, and the circuit board has been flipped, the coating cannot be detected. Therefore, the lifting mechanism 182 will drive the rear conveyor rail 183 to descend and dock with the return conveyor line 1A to transport the fixture to the return conveyor line 1A.

[0090] Then, the return conveyor line 1A transports the fixture to the forward lifting device 12. When the fixture is detected by the return sensor at the end of the return conveyor line 1A near the forward lifting device 12, the transport of the fixture stops, and the control device controls the forward lifting mechanism 122 to drive the forward conveyor rail 123 to descend and receive the fixture on the return conveyor line 1A. After the fixture reaches the set position of the forward conveyor rail 123, it stops, and the forward lifting empty fixture detection mechanism 125 detects whether the fixture carries a circuit board. If it carries a circuit board, the forward conveyor rail 123 rises and transports the fixture to the first board-connecting device 1B. If it is an empty fixture without a circuit board, the forward conveyor rail 123 rises and transports the fixture to the board-mounting device 11. At this time, the forward conveyor rail 123 receives a fixture carrying a circuit board with its B side facing up, and therefore transports it to the first board-connecting device 1B.

[0091] The circuit board with side B facing up will undergo the following processes as described above: spraying by spraying device 13, curing by curing device 14, flipping by flipping device 15, dispensing by dispensing device 16, and inspection by inspection device 17. If side A does not require dispensing, the flipping and dispensing operations can be omitted depending on the actual situation. When the circuit board reaches the set position on the rear lifting device 18, it stops (assuming it has flipped to side A facing up). The spraying detection mechanism 184 will detect that side A of the circuit board has a coating. Therefore, the rear lifting device 18 will transport the fixture to the lower plate device 19. The fixture stops transporting after being detected by the third discharge sensor 195. The circuit board can be manually removed, and the release button is pressed. The rear lifting empty fixture detection mechanism 193 detects that the fixture is empty, and the rear conveying track 183 docks with the rear lifting device 18 to receive the empty fixture.

[0092] The rear lifting mechanism 182 drives the rear conveyor rail 183 to descend and dock with the return conveyor line 1A. The return conveyor line 1A will transport the empty fixture to the front lifting device 12. The front lifting device 12 will receive the empty fixture and, after rising, transport it to the upper plate device 11. The empty fixture will stop after being sensed by the upper plate positioning sensor 114. At this time, the unprocessed circuit board A-side up can be placed on the empty fixture on the upper plate device 11. The processing operation can be repeated by repeating the above steps.

[0093] This completes the processing of the coating and dispensing production equipment according to this preferred embodiment.

[0094] The coating and dispensing production equipment of this preferred embodiment can return empty jigs and flipped circuit boards via a front lifting device, a rear lifting device, and a return conveyor line, achieving a high degree of automation and high work efficiency. Furthermore, it can automatically perform quality checks on spraying and dispensing, saving labor costs and improving product quality.

[0095] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A coating and dispensing production equipment, characterized in that, The equipment includes an upper plate device, a front lifting device, a spraying device, a curing device, a flipping device, a dispensing device, an inspection device, a rear lifting device, and a lower plate device that are connected in sequence, forming an upper conveyor line. The coating and dispensing production equipment also includes a return conveyor line, which is located below the upper conveyor line, and both ends of the return conveyor line are connected to the front lifting device and the rear lifting device, respectively. The front lifting device includes a front lifting frame, a front lifting mechanism mounted on the front lifting frame, and a front conveying track mounted on the front lifting mechanism. The front conveying track connects to the upper conveyor line or the return conveyor line via lifting. The rear lifting device includes a rear lifting frame, a rear lifting mechanism mounted on the rear lifting frame, and a rear conveying track mounted on the rear lifting mechanism. The rear conveying track connects to the upper conveyor line or the return conveyor line via lifting. The spraying device further includes an outer casing, a base, a spraying conveyor track, a slide plate, a connecting frame, and a sealing curtain. The sealing curtain includes multiple sealing curtain units arranged in parallel. The outer casing surrounds the top of the base. The spraying conveyor track is located inside the outer casing. The two ends of the outer casing are provided with openings for product conveying. The top of each sealing curtain unit is connected to the top of the opening. The bottom of each sealing curtain unit is provided with a first magnet. The slide plate is movably disposed on the inner wall of the outer casing and near the bottom of the opening. The slide plate is provided with multiple second magnets for positioning and magnetic attraction with the first magnet. The fixture is equipped with an extrusion block. Both ends of the connecting frame are connected to extension plates. The two extension plates are vertically slidably connected to both sides of the spraying conveyor track. The bottom end of the connecting frame is connected to the base through an elastic element. The top end of the extension plate is equipped with a pressure block. The pressure block is located above the sliding track of the extrusion block. The slide plate is connected to the connecting frame. The extrusion block presses the pressure block upward, thereby driving the slide plate to slide upward, so that the second magnet and the first magnet are magnetically attracted, thereby causing the multiple sealing curtain units to seal the opening.

2. The coating and dispensing production equipment according to claim 1, characterized in that, The front lifting device is also equipped with a front lifting empty fixture detection mechanism, a first feeding sensor, and a first discharging sensor. The first feeding sensor is located at one end of the front lifting device near the upper plate device and is used to sense the fixture conveyed by the upper plate device. The first discharging sensor is located at one end of the front lifting device near the spraying device and is used to sense the conveying of the fixture on the front lifting device to the spraying device and to sense the conveying of the fixture from the return conveyor line to the front lifting device. The front lifting empty fixture detection mechanism is located on one side of the front lifting device and is used to detect whether the fixture from the return conveyor line carries a product. The front lifting device conveys an empty fixture to the upper plate device or a fixture carrying a product to the spraying device according to the signal from the front lifting empty fixture detection mechanism. The rear lifting device is also equipped with a spraying detection mechanism, a second feeding sensor, and a second discharging sensor. The second feeding sensor is located at one end of the rear lifting device near the inspection device and is used to sense the fixture conveyed by the inspection device and to sense the conveying of the fixture on the rear lifting device to the return conveyor line. The second discharging sensor is located at one end of the rear lifting device near the lower plate device and is used to sense the conveying of the fixture between the rear lifting device and the lower plate device. The spraying detection mechanism is located on one side of the rear lifting device and is used to detect whether the product on the fixture from the inspection device has been sprayed. The rear lifting device conveys empty fixtures and fixtures that have not been sprayed to the return conveyor line, or conveys fixtures carrying products and having been sprayed to the lower plate device, according to the signal from the spraying detection mechanism. The lowering plate device includes a rear lifting empty fixture detection mechanism, a third feeding sensor, and a lowering plate conveying track. The third feeding sensor is located at one end of the lowering plate conveying track near the rear lifting device and is used to sense the conveying of fixtures from the rear lifting device to the lowering plate device and to sense the conveying of empty fixtures from the lowering plate device to the rear lifting device. The rear lifting empty fixture detection mechanism is located on one side of the lowering plate conveying track and is used to detect whether the fixtures on the lowering plate conveying track are carrying products.

3. The coating and dispensing production equipment according to claim 2, characterized in that, The upper plate device includes an upper plate frame, an upper plate conveying track, an upper plate positioning sensor, and an upper plate discharge sensor. The upper plate conveying track is disposed on the upper plate frame. The upper plate positioning sensor and the upper plate discharge sensor are arranged sequentially along the conveying direction of the upper plate conveying track. The upper plate positioning sensor is used to sense the fixture being conveyed on the upper plate device to control the fixture to stop at a set position on the upper plate device. The upper plate discharge sensor is used to sense the conveying of the fixture on the upper plate device to the front lifting device and to sense the conveying of an empty fixture on the front lifting device to the upper plate device.

4. The coating and dispensing production equipment according to claim 1, characterized in that, The coating and dispensing production equipment further includes a first plate-connecting device, a second plate-connecting device, and a third plate-connecting device. The first plate-connecting device is located between the front lifting device and the spraying device, the second plate-connecting device is located between the spraying device and the curing device, and the third plate-connecting device is located between the flipping device and the dispensing device.

5. The coating and dispensing production equipment according to claim 3, characterized in that, The spraying device includes a spraying conveyor track for carrying products, and a spray nozzle and a spraying information reading mechanism disposed above the spraying conveyor track; The dispensing device includes a dispensing platform for carrying the product, and a dispensing head and a dispensing information reading mechanism disposed above the dispensing platform. The flipping device includes a flipping conveyor track for clamping and conveying products, and a flipping information reading mechanism disposed above the flipping conveyor track; The inspection device includes an inspection platform for carrying the product, and a detection camera and an inspection information reading mechanism mounted above the inspection platform.

6. The coating and dispensing production equipment according to claim 5, characterized in that, The upper conveyor track, the front conveyor track, the spraying conveyor track, the dispensing platform, the flipping conveyor track, the inspection platform, the rear conveyor track, and the return conveyor line are all connected to a width-adjusting screw. The width-adjusting motor is connected to the width-adjusting screw to drive the width-adjusting screw to rotate. All the width-adjusting motors are electrically connected to the same control device.

7. The coating and dispensing production equipment according to claim 1, characterized in that, The front lifting device includes multiple sets of front conveying tracks, which are arranged in parallel at different heights of the front lifting mechanism. The return conveyor line includes a return conveyor positioning sensor and a front lifting empty fixture detection mechanism. Both the return conveyor positioning sensor and the front lifting empty fixture detection mechanism are located at one end of the return conveyor line near the front lifting device, with the return conveyor positioning sensor being closer to the front lifting device than the front lifting empty fixture detection mechanism. The control device controls the return conveyor line to stop based on the sensing signal from the return conveyor positioning sensor. The front lifting empty fixture detection mechanism is used to detect whether the fixture on the stopped return conveyor line carries a product.

8. The coating and dispensing production equipment according to claim 1, characterized in that, The bottom end of the first magnet is connected to a positioning plate made of plastic, and a positioning groove is provided through the bottom end of the positioning plate. The sliding plate is provided with a positioning protrusion for matching the positioning groove.

9. The coating and dispensing production equipment according to claim 1, characterized in that, The flipping device further includes a flipping frame, a fixed plate, a movable plate, a slide rod, a drive rod, and a flipping conveyor track. The two fixed plates are rotatably connected to both sides of the flipping frame. The slide rod and the drive rod are connected between the two fixed plates. The movable plate is arranged parallel to the fixed plate and is slidably connected to the slide rod. The movable plate is driven to slide by the drive rod. The flipping conveyor track includes a first track and a second track that match each other. The first track is arranged inside one of the fixed plates, and the second track is arranged on the side of the movable plate close to the first track. The flipping device also includes two sets of limiting components. The limiting components include a cylinder, a transmission lever, and a first limiting block. A second limiting block is provided at both ends of the outer side of the fixed plate. The first limiting block is rotatably connected to the flipping frame. The output end of the cylinder is rotatably connected to the first limiting block through the transmission lever to control the rotation of the first limiting block to contact the second limiting block or to avoid contact with the second limiting block.

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