Relay base and circuit board automatic assembly machine

Abstract

The present invention discloses an automatic assembly machine for a relay bottom shell and a circuit board, comprising a frame, a first turntable mechanism and a second turntable mechanism installed on the frame, wherein a circuit board feeding mechanism, a terminal piece automatic feeding and assembly mechanism and a terminal piece butt welding mechanism are sequentially arranged on the outer side of the first turntable mechanism, an automatic bottom shell feeding mechanism, a bottom shell hot-melt mechanism and a blanking mechanism are sequentially arranged on the outer side of the second turntable mechanism, and a circuit board screening and transferring mechanism is installed between the first turntable mechanism and the second turntable mechanism, so as to realize the functions of automatically loading the circuit board, feeding and assembling the terminal pieces onto the circuit board, testing the resistance of the circuit board, testing the welding quality of the terminal pieces, screening the qualified circuit boards, feeding the bottom shell, assembling the circuit board onto the bottom shell, testing the power on and off of the relay, fixing the circuit board and the bottom shell by hot-melt, printing and coloring the circuit board, screening the finished products and blanking, and the machine has a high degree of automation and high assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the field of relay assembly assembly, in particular to an automatic assembly machine for a relay bottom shell and a circuit board. Background Art

[0002] A relay is an electrical control device. When the change in the input quantity reaches the specified requirement, it causes a predetermined step change in the controlled quantity in the electrical output circuit. It has an interactive relationship between the control system and the controlled system. It is usually used in automated control circuits. It is actually an automatic switch that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] like Figure 1 and Figure 2 As shown, the relay includes a circuit board 04, a terminal piece 05 and a bottom shell 06. In the existing technology, a large amount of manual labor is usually used to first assemble the terminal piece 05 onto the circuit board 04, and then the circuit board 04 and the bottom shell 06 are fixed by hot-melt. In addition, the assembly process also involves multiple testing stations, such as resistance detection of the circuit board 04, assembly size detection of the terminal piece 05, power-on and power-off detection of the relay, etc. Therefore, the manual assembly method has technical problems such as high cost, low assembly efficiency and unstable assembly quality. Summary of the Invention

[0004] The object of the present invention is to overcome the above-mentioned defects in the prior art and to provide a relay bottom shell and circuit board automatic assembly machine that can automatically load circuit boards, automatically feed terminal pieces and assemble and weld them to circuit boards, automatically detect the resistance of circuit boards, automatically detect the welding quality of terminal pieces, automatically screen qualified circuit boards, automatically feed bottom shells, automatically assemble circuit boards on bottom shells, automatically perform power on and off detection on relays, automatically hot-melt fix the circuit boards and bottom shells, automatically print and color the circuit boards, and automatically screen finished products and unload them, with high assembly efficiency.

[0005] To achieve the above-mentioned objectives, the present invention provides an automatic assembly machine for a relay base shell and a circuit board, comprising a frame, a first turntable mechanism installed on the frame for transporting the circuit board, and a second turntable mechanism for transporting the base shell, wherein the outer side of the first turntable mechanism is sequentially provided with a circuit board loading mechanism for automatically loading the circuit board, a terminal piece automatic feeding and assembly mechanism for automatically loading and assembling terminal pieces onto the circuit board, and a terminal piece welding mechanism for welding the terminal pieces to the circuit board, wherein the outer side of the second turntable mechanism is sequentially provided with a base shell automatic loading mechanism for automatically feeding the base shell, a base shell hot-melt mechanism for hot-melt fixing the base shell and the circuit board, and a unloading mechanism for automatically unloading the finished product, wherein a circuit board screening and transferring mechanism for screening the circuit boards located on the first turntable mechanism as good products and transferring them to be assembled on the base shell on the second turntable mechanism is installed between the first turntable mechanism and the second turntable mechanism.

[0006] Preferably, the circuit board loading mechanism includes a circuit board material tray for storing circuit boards, a manipulator fixing frame mounted on the frame, a horizontal material picking slide mounted on the manipulator fixing frame, a vertical material picking slide transmission-connected to the horizontal material picking slide, and a circuit board clamping cylinder mounted below the vertical material picking slide.

[0007] Preferably, the terminal piece automatic feeding and assembly mechanism includes a terminal piece automatic loading mechanism installed on a frame for automatically feeding the terminal piece, a first terminal piece automatic assembly mechanism installed on one side of the discharge port of the terminal piece automatic loading mechanism for transferring the terminal piece for assembly onto the circuit board, a second terminal piece automatic assembly mechanism installed on the other side of the discharge port of the terminal piece automatic loading mechanism, and a terminal piece clamping mechanism installed at the discharge port of the terminal piece automatic loading mechanism for driving the terminal piece to be clamped on the circuit board.

[0008] Preferably, the terminal piece butt welding mechanism includes an upper frame and a lower frame, the upper frame is equipped with a first butt welding cylinder and a second butt welding cylinder arranged adjacent to each other, the piston rod of the first butt welding cylinder is fixedly connected to the first upper electrode butt welding device, the piston rod of the second butt welding cylinder is fixedly connected to the second upper electrode butt welding device, the upper frame is provided with a first guide device, the first upper electrode butt welding device and the second upper electrode butt welding device can slide freely along the first guide device respectively, and a third butt welding cylinder is fixedly installed below the lower frame, the piston rod of the third butt welding cylinder is fixedly connected to the lower electrode butt welding device, the lower frame is provided with a second guide device, and the lower electrode butt welding device can slide freely along the second guide device.

[0009] Preferably, the device further comprises a resistance detection device installed outside the first turntable mechanism for testing the resistance of the circuit board, and a circuit board detection hot-melt mechanism for detecting the welding quality of the terminal pieces in the circuit board and hot-melting the plastic parts on the circuit board;

[0010] The circuit board detection hot melt mechanism includes a support fixedly connected to the frame, an optical axis fixedly connected to the support, a first pressing device sleeved on the optical axis for pressing the circuit board onto the plastic part, a light-filling device sleeved on the optical axis for filling light on the surface of the circuit board, and a detection device sleeved on the top of the optical axis for detecting whether the size of the circuit board assembly is qualified. The light-filling device is located between the first pressing device and the detection device. A first hot melt device for hot-melting the plastic part pin to fix the circuit board to the plastic part is installed on one side of the support. The first hot melt device includes a copper block, at least one plug connector mounted on the copper block, and at least one heating rod mounted on the copper block.

[0011] Preferably, the automatic loading mechanism for the bottom shell includes a bottom shell silo fixedly connected to the frame for storing the bottom shell, a conveyor belt device installed below the bottom shell silo, a bottom shell vibration plate installed at the discharge port of the conveyor belt device and fixedly connected to the frame, a bottom shell feeding channel connected to the discharge port of the bottom shell vibration plate, a straight vibrator installed below the bottom shell feeding channel and fixedly connected to the frame, and a bottom shell loading robot installed at the discharge port of the bottom shell feeding channel for transferring the bottom shell located on the bottom shell feeding channel to the second turntable mechanism.

[0012] Preferably, the circuit board screening and transferring mechanism includes a circuit board screening device mounted on a frame, and a circuit board loading device mounted on one side of the circuit board screening device;

[0013] The circuit board screening device includes a first material dividing cylinder and a slide rail installed on the frame, a rack guide plate installed on the slide rail and transmission connected to the first material dividing cylinder, a second material dividing cylinder installed on the rack guide plate, a rack transmission connected to the second material dividing cylinder, one side of the rack guide plate is fixedly connected to a gear fixing seat, a gear is rotatably connected in the gear fixing seat, and a circuit board clamping cylinder is fixedly connected to the gear, and also includes a storage bin installed below the circuit board clamping cylinder for collecting defective circuit boards, the rack guide plate is slidably connected to the slide rail, and the gear is meshed with the rack for transmission.

[0014] Preferably, it also includes a detection mechanism arranged on the outside of the second turntable mechanism for performing internal on-off detection on the relay, the detection mechanism includes a column fixedly connected to the frame, a first detection cylinder fixing seat fixedly connected to the bottom of the column, a first detection cylinder installed on the first detection cylinder fixing seat, a first probe fixing seat transmission-connected to the first detection cylinder, a first probe fixedly connected to the first probe fixing seat, a second cylinder fixing seat fixedly connected above the column, a second detection cylinder installed on the second cylinder fixing seat, a second probe fixing seat transmission-connected to the second detection cylinder, and a second probe fixedly connected to the second probe fixing seat.

[0015] Preferably, the bottom shell hot melt mechanism includes a second pressing device installed on the frame for pressing the circuit board onto the bottom shell, and a second hot melt device installed on one side of the second pressing device;

[0016] The second pressing device includes a first pressing cylinder and a second pressing cylinder installed on the frame, a first pressing block drivingly connected to the first pressing cylinder, and a second pressing block drivingly connected to the second pressing cylinder;

[0017] The second hot melt device includes an electric cylinder fixing seat fixedly connected to the frame and installed between the first clamping cylinder and the second clamping cylinder, an electric cylinder fixedly connected to the electric cylinder fixing seat, a heating copper block transmission-connected to the electric cylinder, an electric heating rod fixedly connected to one side of the heating copper block, and a rivet head fixedly connected below the heating copper block.

[0018] Preferably, the unloading mechanism includes a lifting cylinder installed on the frame, a rotating cylinder transmission connected to the lifting cylinder, a bottom shell clamping cylinder transmission connected to the rotating cylinder, and also includes a good material channel and a coloring device installed on the frame. The coloring device includes a first coloring cylinder fixedly connected to the frame, a second coloring cylinder fixing seat transmission connected to the first coloring cylinder, a second coloring cylinder fixedly connected to the second coloring cylinder fixing seat, a coloring pen fixing seat transmission connected to the second coloring cylinder, and a coloring pen fixedly connected to the coloring pen fixing seat.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is provided with a frame, a first turntable mechanism for transporting circuit boards and a second turntable mechanism for transporting bottom shells installed on the frame, the outer side of the first turntable mechanism is sequentially provided with a circuit board loading mechanism for automatically loading circuit boards, a terminal piece automatic feeding and assembly mechanism for automatically loading terminal pieces and assembling them onto circuit boards, and a terminal piece butt welding mechanism for welding terminal pieces to circuit boards, the outer side of the second turntable mechanism is sequentially provided with a bottom shell automatic loading mechanism for automatically feeding the bottom shell, a bottom shell hot-melt mechanism for hot-melt fixing the bottom shell and the circuit board, and a unloading mechanism for automatically unloading the finished product, the first turntable mechanism and the second turntable mechanism are sequentially provided with A circuit board screening and transferring mechanism is installed between the mechanisms, which is used to screen the circuit boards on the first turntable mechanism for good products and transfer them to the bottom shell for assembly on the second turntable mechanism. It realizes the functions of automatically loading circuit boards, automatically feeding terminal pieces and assembling and welding them to the circuit boards, automatically detecting the resistance of the circuit boards, automatically detecting the welding quality of the terminal pieces, automatically screening qualified circuit boards, automatically feeding the bottom shell, automatically assembling the circuit boards on the bottom shell, automatically detecting the on and off power of the relay, automatically hot-melting the circuit boards and the bottom shell, automatically printing and coloring the circuit boards, and automatically screening the finished products and unloading. It has a high degree of automation, high assembly efficiency, and well-guaranteed product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural diagram of the relay provided by the present invention;

[0023] Figure 2 is an exploded view of the relay provided by the present invention;

[0024] Figure 3 This is a plan view of the relay base and circuit board automatic assembly machine provided by the present invention;

[0025] Figure 4 It is a structural schematic diagram of the circuit board feeding mechanism provided by the present invention;

[0026] Figure 5 yes Figure 4 Exploded view of

[0027] Figure 6 It is a structural diagram of the terminal piece automatic feeding assembly mechanism provided by the present invention;

[0028] Figure 7 This is an exploded view of the terminal piece automatic feeding mechanism provided by the present invention;

[0029] Figure 8 It is a structural schematic diagram of the second terminal piece automatic assembly mechanism provided by the present invention;

[0030] Figure 9 yes Figure 8 Exploded view of

[0031] Figure 10 This is an exploded view of the terminal piece clamping mechanism provided by the present invention;

[0032] Figure 11 It is a structural schematic diagram of the terminal piece welding mechanism provided by the present invention;

[0033] Figure 12 yes Figure 11 Exploded view of

[0034] Figure 13 This is an exploded view of the upper frame provided by the present invention;

[0035] Figure 14 This is an exploded view of the lower frame provided by the present invention;

[0036] Figure 15 It is a structural schematic diagram of the resistance detection device provided by the present invention;

[0037] Figure 16 It is a structural schematic diagram of the circuit board detection hot melt mechanism provided by the present invention;

[0038] Figure 17 yes Figure 16 Exploded view of

[0039] Figure 18 yes Figure 17 A partial enlarged view of point A in the middle;

[0040] Figure 19 It is a structural schematic diagram of the bottom shell automatic feeding mechanism provided by the present invention;

[0041] Figure 20 It is a structural schematic diagram of the bottom shell loading robot provided by the present invention;

[0042] Figure 21 It is a structural schematic diagram of the circuit board screening and transfer mechanism provided by the present invention;

[0043] Figure 22 is an exploded view of the circuit board screening device provided by the present invention;

[0044] Figure 23 It is a structural schematic diagram of the detection mechanism provided by the present invention;

[0045] Figure 24 It is a structural schematic diagram of the bottom shell hot-melt mechanism provided by the present invention;

[0046] Figure 25 This is a schematic structural diagram of the flip printing mechanism provided by the present invention;

[0047] Figure 26 It is a structural schematic diagram of the blanking mechanism provided by the present invention. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] like Figure 3 As shown, the present invention provides a relay bottom shell and circuit board automatic assembly machine, including a frame 01, a first turntable mechanism 02 installed on the frame 01 for transporting the circuit board and a second turntable mechanism 03 for transporting the bottom shell, the outer side of the first turntable mechanism 02 is sequentially provided with a circuit board feeding mechanism 1 for automatically feeding the circuit board, a terminal piece automatic feeding assembly mechanism 2 for automatically feeding and assembling the terminal piece onto the circuit board, and a terminal piece welding mechanism 3 for welding the terminal piece to the circuit board, the outer side of the second turntable mechanism 03 is sequentially provided with a bottom shell automatic feeding mechanism 4 for automatically feeding the bottom shell, a bottom shell automatic feeding mechanism 5 for automatically fusing the bottom shell to the circuit board, and a terminal piece welding mechanism 6 for automatically fusing the bottom shell to the circuit board. The bottom shell hot-melt mechanism 5 and the unloading mechanism 6 for automatically unloading the finished product are provided. A circuit board screening and transferring mechanism 7 for screening the circuit boards located on the first turntable mechanism 02 as good products and transferring them to be assembled on the bottom shell on the second turntable mechanism 03 is installed between the first turntable mechanism 02 and the second turntable mechanism 03. It also includes a resistance detection device 8 installed on the outside of the first turntable mechanism 02 for testing the resistance of the circuit board, and a circuit board detection hot-melt mechanism 9 for detecting the welding quality of the terminal pieces in the circuit board and hot-melting the plastic parts on the circuit board. It also includes a detection mechanism 10 arranged on the outside of the second turntable mechanism 03 for performing internal on-off detection of the relay.

[0050] The various components of this embodiment are described in detail below with reference to the accompanying drawings.

[0051] like Figure 4 and Figure 5As shown, the circuit board loading mechanism 1 includes a circuit board material tray 11 for storing circuit boards, a manipulator fixing frame 12 fixed on the frame 01, a horizontal material picking slide 13 fixed on the manipulator fixing frame 12, a vertical material picking slide 14 transmission-connected to the horizontal material picking slide 13, and a circuit board clamping cylinder 15 installed under the vertical material picking slide 14.

[0052] Specifically, it also includes a feeding slide 16 installed under the circuit board material tray 11 for transporting the circuit board material tray 11, and a circuit board material tray fixing plate 17 connected to the feeding slide 16 is also provided between the feeding slide 16 and the circuit board material tray 11, wherein the circuit board material tray 11 is fixed on the circuit board material tray fixing plate 17, the feeding slide 16, the horizontal material pick-up slide 13 and the vertical material pick-up slide 14 can all be belt-driven, screw-nut-driven, or linear motor-driven. During operation, the feeding slide 16 drives the circuit board material tray 11 to move to the position waiting for material pick-up, and then the vertical material pick-up slide 14 drives the circuit board clamp The claw cylinder 15 descends, and the circuit board claw cylinder 15 clamps the circuit board on the circuit board tray 11. The vertical material picking slide 14 drives the circuit board claw cylinder 15 to rise, and the horizontal material picking slide 13 drives the circuit board claw cylinder 15 to move horizontally. Then the vertical material picking slide 14 drives the circuit board claw cylinder 15 to descend again, and the circuit board claw cylinder 15 places the circuit board on the first turntable mechanism 02 to realize the automatic loading function of the circuit board. When the circuit boards in the circuit board tray 11 are taken out, the feeding slide 16 drives the circuit board tray 11 to move to the outside. At this time, the tray can be replaced manually or automatically by a robot.

[0053] like Figure 6 As shown, the terminal piece automatic feeding and assembly mechanism 2 includes a terminal piece automatic loading mechanism 21 installed on the frame 01 for automatically feeding the terminal piece, a first terminal piece automatic assembly mechanism 22 installed on one side of the discharge port of the terminal piece automatic loading mechanism 21 for transferring the terminal piece to be assembled on the circuit board, a second terminal piece automatic assembly mechanism 23 installed on the other side of the discharge port of the terminal piece automatic loading mechanism 21, and a terminal piece clamping mechanism 24 installed at the discharge port of the terminal piece automatic loading mechanism 21 for driving the terminal piece to be clamped on the circuit board. The first terminal piece automatic assembly mechanism 22 and the second terminal piece automatic assembly mechanism 23 are symmetrically arranged on both sides of the discharge port of the terminal piece automatic loading mechanism 21.

[0054] like Figure 7As shown, the terminal piece automatic feeding mechanism 21 includes a first terminal piece vibration disk 211 and a second terminal piece vibration disk 212 fixed on the frame 01 for automatically feeding the terminal piece, a DC vibrator 213 fixed on the frame 01, and a terminal piece feeding channel 214 fixed above the DC vibrator 213. The first terminal piece vibration disk 211 and the second terminal piece vibration disk 212 have the same discharge direction. The terminal piece feeding channel 214 is respectively connected to the discharge ports of the first terminal piece vibration disk 211 and the second terminal piece vibration disk 212, and also includes a blocking block 215 installed at the discharge port of the terminal piece feeding channel 214. A torsion spring 216 is sleeved in the blocking block 215. A blocking cylinder 217 and a first terminal piece sensor 218 are installed above the discharge port of the terminal piece feeding channel 214. One leg of the torsion spring 216 is fixed on the feeding channel 214, and the other leg is fixed on the blocking block 215. The blocking block 215 can make reciprocating rotational motion on the feeding channel 214 through the torsion spring 216. A second terminal piece sensor 219 is installed above the feed port of the terminal piece feeding channel 214, wherein the first sensor 218 and the second sensor 219 are both optical fiber sensors.

[0055] During operation, the first terminal piece vibration disk 211 and the second terminal piece vibration disk 212 automatically feed the terminal pieces into the feed port of the terminal piece feeding channel 214 through vibration. Through the vibration of the DC vibrator 213, the terminal pieces in the terminal piece feeding channel 214 continue to move toward the discharge port. When the terminal piece is blocked by the blocking block 215, the first sensor 218 detects that the terminal piece is in place and feeds back the signal to the blocking cylinder 217. The blocking cylinder 217 drives the piston rod to block the second terminal piece at the discharge port of the terminal piece feeding channel 214, so as to facilitate the subsequent transfer and assembly of the first terminal piece. When the second sensor 219 detects that the feed port of the terminal piece feeding channel 214 is full of terminal piece materials, the first terminal piece vibration disk 211 and the second terminal piece vibration disk 212 automatically stop operating, which saves electricity while also having the advantages of high degree of automation and stable and reliable terminal piece feeding.

[0056] like Figure 8 and Figure 9As shown, the first terminal piece automatic assembly mechanism 22 / the second terminal piece automatic assembly mechanism 23 includes a cylinder fixing seat 231 and a slider 232 fixed on the frame 01, a first transverse cylinder 233 installed on the cylinder fixing seat 231, a slide rail 234 transmission-connected to the first transverse cylinder 233, a cylinder fixing block 235 fixedly connected to one end of the slide rail 234, a second transverse cylinder 236 fixed on the cylinder fixing block 235, and a clamping cylinder 237 transmission-connected to the second transverse cylinder 236, the slide rail 234 is slidingly connected to the slider 232, the piston rod of the first transverse cylinder 233 is fixedly connected to the cylinder fixing seat 231, the cylinder body of the first transverse cylinder 233 is fixedly connected to the slide rail 234, and the second transverse cylinder 236 is a self-guided slide cylinder.

[0057] During operation, the second transverse cylinder 236 drives the clamping cylinder 237 to extend to one side of the discharge port of the terminal piece feeding channel 214, and the clamping hand on the clamping cylinder 237 clamps the terminal piece blocked by the blocking block 215. At this time, the first transverse cylinder 233 drives the clamping cylinder 237 to move along the discharge direction of the terminal piece feeding channel 214, and the terminal piece on the clamping cylinder 237 pushes the blocking block 215 to rotate on the feeding channel 214 around the torsion spring 216, thereby The terminal piece on the feeding channel 214 is moved out. At this time, the blocking block 215 rotates around the torsion spring 216 on the feeding channel 214 to reset. At the same time, the second transverse cylinder 236 performs a reset movement. When the first transverse cylinder 233 drives the clamping cylinder 237 to move transversely into place, the second transverse cylinder 236 drives the clamping cylinder 237 to move to the side of the assembled circuit board. The clamping cylinder 237 releases the terminal piece, completing the function of assembling the terminal piece onto the circuit board.

[0058] like Figure 10 As shown, the terminal strip clamping mechanism 24 includes a clamping device 241 mounted on the frame 01 for clamping the terminal strip on the circuit board, and a driving device 242 for driving the clamping device 241 .

[0059] The clamping device 241 includes a clamp fixing base 2411 fixed on the frame 01, a first rotating shaft 2412 fixed on one side of the clamp fixing base 2411, a second rotating shaft 2413 fixed on the other side of the clamp fixing base 2411, a first terminal piece clamp 2414 rotatably connected and sleeved on the first rotating shaft 2412, a second terminal piece clamp 2415 rotatably connected and sleeved on the second rotating shaft 2413, a first fixing screw 2416 fixedly connected above the first terminal piece clamp 2414, a second fixing screw 2417 fixedly connected above the second terminal piece clamp 2415, and a tension spring installed between the first fixing screw 2416 and the second fixing screw 2417.

[0060] Specifically, the first terminal strip clip 2414 and the second terminal strip clip 2415 are symmetrically arranged on both sides of the clip fixing base 2411, wherein the first fixing screw 2416 and the second fixing screw 2417 are both hexagon socket head screws, one end of the tension spring is hooked on the first fixing screw 2416, and the other end of the tension spring is hooked on the second fixing screw 2417.

[0061] The driving device 242 includes a driving cylinder 2421 fixedly connected to the frame 01, and a push block 2422 transmission-connected to the driving cylinder 2421, wherein the driving cylinder 2421 is a double-axis cylinder with its own guide, and the push block 2422 is fixed on the piston of the driving cylinder 2421, and a V-shaped groove 24221 is opened in front of the push block 2422.

[0062] During operation, the driving cylinder 2421 drives the push block 2422 to move forward, and the push block 2422 squeezes the first terminal piece clip 2414 and the second terminal piece clip 2415, so that the first terminal piece clip 2414 rotates around the first rotating shaft 2412 and along the V-shaped notch 24221, and the second terminal piece clip 2415 rotates around the second rotating shaft 2413 and along the V-shaped notch 24221. At this time, the first terminal piece clip 2414 and the second terminal piece clip 2415 move toward the push block 2422. One end of the terminal piece is in a contracted state, and the other end is in an open state. When the first terminal piece automatic assembly mechanism 22 / the second terminal piece automatic assembly mechanism 23 respectively places the terminal pieces on both sides of the circuit board, the driving cylinder 2421 drives the push block 2422 to reset. At this time, the first terminal piece clamp 2414 and the second terminal piece clamp 2415 are subjected to the tension spring force, and the originally open end immediately contracts and clamps the terminal pieces on both sides of the circuit board, realizing the clamping function of the terminal piece, which is convenient for subsequent terminal piece welding operations.

[0063] like Figure 11-14 As shown, the terminal piece butt welding mechanism 3 includes an upper frame 31 and a lower frame 32, and the upper frame 31 is equipped with a first butt welding cylinder 33 and a second butt welding cylinder 34 arranged adjacent to each other, and the piston rod of the first butt welding cylinder 33 is fixedly connected to the first upper electrode butt welding device 35, and the piston rod of the second butt welding cylinder 34 is fixedly connected to the second upper electrode butt welding device 36, and the upper frame 31 is provided with a first guide device 37, and the first upper electrode butt welding device 35 and the second upper electrode butt welding device 36 can slide freely along the first guide device 37 respectively, and a third butt welding cylinder 38 is fixedly connected below the lower frame 32, and the piston rod of the third butt welding cylinder 38 is fixedly connected to the lower electrode butt welding device 39, and the lower frame 32 is provided with a second guide device 310, and the lower electrode butt welding device 39 can slide freely along the second guide device 310.

[0064] like Figure 11-14 As shown, the upper frame 31 includes a first support plate 311, a second support plate 312 installed below the first support plate 311 and fixedly connected to the first support plate 311, the first butt welding cylinder 33 and the second butt welding cylinder 34 are respectively fixed above the first support plate 311, and the upper end surface of the second support plate 312 is fixedly connected with a first buffer 313 and a second buffer 314, wherein the first buffer 313 is used to buffer the first upper electrode butt welding device 35 when it slides on the first guide device 37, so as to avoid a rigid collision between the upper electrode 352 on the first upper electrode butt welding device 35 and the terminal piece due to excessive speed, and the second buffer 314 is used to buffer the second upper electrode butt welding device 36 when it slides on the second guide device 310, so as to avoid a rigid collision between the upper electrode 352 on the second upper electrode butt welding device 36 and the terminal piece due to excessive speed.

[0065] like Figure 11-14 As shown, the first upper electrode butt welding device 35 / the second upper electrode butt welding device 36 includes an upper electrode mounting base 351 fixedly connected to the piston rod of the first butt welding cylinder 33, an upper electrode 352 fixedly connected below the upper electrode mounting base 351, and a water inlet joint 353 and a water outlet joint 354 fixed on one side of the upper electrode mounting base 351, wherein a water channel is opened in the upper electrode mounting base 351 and is connected to the water inlet joint 353 and the water outlet joint 354 respectively, and the water channel is used to reduce the working temperature of the upper electrode 352 during welding, thereby ensuring the reliability and stability of the welding operation. In addition to water for cooling, the water channel can also contain other low-temperature liquids or low-temperature gases, such as liquid nitrogen.

[0066] like Figure 11-14 As shown, the first guide device 37 includes a plurality of first guide columns 371 installed on the upper frame 31, and a first linear bearing 372 that is freely slidable inside the first guide column 371. The first linear bearing 372 is fixedly connected to the upper electrode mounting seat 351, wherein the first welding cylinder 33 can drive the upper electrode 352 on the first upper electrode welding device 35 to move up and down along the first guide column 371, and the second welding cylinder 34 can drive the upper electrode 352 on the second upper electrode welding device 36 to move up and down along the first guide column 371. The cooperation between the linear bearing and the guide column not only makes the guiding smooth, but also makes the positioning accuracy more accurate.

[0067] like Figure 11-14As shown, the lower frame 32 includes a third support plate 321, a plurality of second guide shafts 322 fixedly connected to the upper end surface of the third support plate 321, the third welding cylinder 38 is fixedly connected to the lower end surface of the third support plate 321, and the lower electrode welding device 39 includes a lower electrode mounting seat 391 fixedly connected to the piston rod of the third welding cylinder 38, a lower electrode 392 fixed above the lower electrode mounting seat 391, wherein two lower electrodes 392 are adjacently arranged in the middle position above the lower electrode mounting seat 391, and the lower electrode welding device 39 also includes a lower electrode mounting seat 391 fixed to the side of the lower electrode mounting seat 391. The water inlet interface 393 and the water outlet interface 394 are provided in the lower electrode mounting seat 391, wherein a water channel is opened which is connected with the water inlet interface 393 and the water outlet interface 394 respectively, and the water channel is used to reduce the working temperature of the lower electrode 392 during welding, thereby ensuring the reliability and stability of the welding operation. In addition to water cooling, the water channel can also contain other low-temperature liquids or low-temperature gases, such as liquid nitrogen. The second guide device 310 is a plurality of second linear bearings 310 which are freely slidable in the second guide shaft 322, and the second linear bearings 310 are fixedly connected to the lower electrode mounting seat 391.

[0068] Specifically, during welding, the first welding cylinder 33 drives the upper electrode 352 on the first upper electrode welding device 35 to move downward with the first guide column 371 as the guide, and at the same time, the second welding cylinder 34 drives the upper electrode 352 on the second upper electrode welding device 36 to move downward synchronously with the first guide column 371 as the guide, so that the upper electrode 352 on the first upper electrode welding device 35 and the upper electrode 352 on the second upper electrode welding device 36 respectively contact the upper end surface of the terminal piece, and at the same time, the third welding cylinder 38 drives the lower electrode 392 on the lower electrode welding device 39 to move downward with the second guide column 371 as the guide, 22 is guided to move upward, so that the lower electrode 392 on the lower electrode welding device 39 contacts the bottom of the terminal piece, and the terminal piece and the circuit board are welded. At this time, the external water flows in from the water inlet joint 353 and flows out from the water outlet joint 354, which reduces the temperature of the upper electrode 352 during welding. At the same time, the external water also flows in from the water inlet interface 393 and flows out from the water outlet interface 394, which reduces the temperature of the lower electrode 392 during welding, thereby ensuring good welding quality while extending the service life of the upper electrode 352 and the lower electrode 392, making the welding process more stable and reliable.

[0069] like Figure 15As shown, the resistance detection device 8 includes a detection drive cylinder 81 fixed on the frame 01, a detection clamping cylinder 82 fixed on the piston rod of the detection drive cylinder 81, a cylindrical detection column 83 fixed on the frame 01, a detection cylinder fixing seat 84 sleeved on the detection column 83, a detection cylinder 85 fixed on the detection cylinder fixing seat 84, a probe seat 86 fixed on the piston rod of the detection cylinder 85, and a detection probe 87 fixed on the probe seat 86.

[0070] Specifically, during operation, the detection drive cylinder 81 drives the detection clamping cylinder 82 to move to the edge of the first turntable mechanism 02, and the detection clamping cylinder 82 clamps the circuit board. At this time, the detection cylinder 85 drives the detection probe 87 to contact the circuit board, and automatically performs resistance detection on the circuit board, and feeds back the resistance value to the system.

[0071] like Figure 16-Figure 18 As shown, the circuit board detection hot melt mechanism 9 includes a support 91 fixed on the frame 01, an optical axis 92 fixedly connected to the support 91, a first pressing device 93 sleeved on the optical axis 92 for pressing the circuit board onto the plastic part, a light-filling device 94 sleeved on the optical axis 92 for filling light on the surface of the circuit board, and a detection device 95 sleeved on the top of the optical axis 92 for detecting whether the size of the circuit board assembly is qualified. The light-filling device 94 is located between the first pressing device 93 and the detection device 95. A hot melt device 96 for hot-melting the plastic part pin to fix the circuit board to the plastic part is installed on one side of the support 91. The hot melt device 96 includes a copper block 961, at least one plug connector 962 mounted on the copper block 961, and at least one heating rod 963 mounted on the copper block 961.

[0072] Specifically, the optical axis 92 is fixed vertically on the support 91, wherein the copper block 961 has good thermal conductivity and can transfer the heat on the heating rod 963 to the plug connector 962. There are two plug connectors 962, which are fixed directly in front of the copper block 961 respectively, and there are two heating rods 963, which are fixed directly below the copper block 961 respectively. At this time, if the installation space of the copper block 961 allows, more heating rods 963 can be added to further reduce the heating time of the plug connector 962 and reach the required temperature faster.

[0073] like Figure 16-Figure 18As shown, the first clamping device 93 includes a cylinder mounting seat 931 sleeved on the optical axis 92, a driving cylinder 932 fixed on the cylinder mounting seat 931, and a pressure block 933 transmission-connected to the driving cylinder 932, wherein the cylinder mounting seat 931 is fixed to the optical axis 92 by a top screw. When the top screw is loosened, the cylinder mounting seat 931 can slide freely along the optical axis 92. When adjusted into place, an inner hexagonal wrench is used to tighten the top screw in the cylinder mounting seat 931 to the optical axis 92. In addition, the cylinder body of the driving cylinder 932 is fixed on the cylinder mounting seat 931, and the piston rod of the driving cylinder 932 is fixedly connected to the pressure block 933.

[0074] like Figure 16-Figure 18 As shown, the fill light device 94 includes a light source fixing seat 941 mounted on the optical axis 92, and a light source 942 mounted on the light source fixing seat 941, wherein the light source fixing seat 941 is fixed on the optical axis 92 by a top screw. When the top screw is loosened, the light source fixing seat 941 can slide freely along the optical axis 92, and can adjust the light intensity of the light source on the illuminated object. When adjusted to the right position, an Allen wrench is used to tighten the top screw in the light source fixing seat 941 to the optical axis 92, wherein the light source 942 is an annular light source. The annular light source has appropriate light intensity and its structural volume is small, which is convenient for installation.

[0075] like Figure 16-Figure 18 As shown, the detection device 95 includes a CCD fixing seat 951 mounted on the optical axis 92, a CCD 952 mounted on the CCD fixing seat 951, and a lens 953 mounted on the CCD 952, wherein the CCD fixing seat 951 is fixed to the optical axis 92 by a top screw. When the top screw is loosened, the CCD fixing seat 951 can slide freely along the optical axis 92 and can adjust the distance between the lens 953 and the object to be photographed. When the adjustment is in place, the top screw in the CCD fixing seat 951 is tightened to the optical axis 92 using an Allen wrench.

[0076] like Figure 16-Figure 18As shown, the hot melt device 96 also includes a driving device 97 for driving the plug connector 962 to be inserted into the bottom shell pin, the driving device 97 includes a fixed seat 971, a driving member 972 fixedly connected to one side of the fixed seat 971, a linear bearing I973 and a linear bearing II974 fixed on the fixed seat 971, a first guide light axis 975 sleeved in the linear bearing I973 and freely sliding along the linear bearing I973, a second guide light axis 976 sleeved in the linear bearing II974 and freely sliding along the linear bearing II974, one end of the copper block 961 is fixedly connected to the first guide light axis 975, and the other end is fixedly connected to the second guide light axis 976, the copper block 961 is transmission-connected to the driving member 972, specifically, the linear bearing I973 and the linear bearing II974 are flange-type linear bearings, which are fixed to the fixed seat 971 by screws on the flange, and the driving member 972 can be a cylinder or an electric cylinder.

[0077] During operation, the light source 942 on the fill light device 94 fills the circuit board with light, and the lens 953 on the detection device 95 takes a picture of the circuit board, collects the information and transmits it to the CCD952. When the system detects that the welding quality of the terminal piece in the circuit board is poor, the hot melt device 96 does not start the operation. When the system detects that the welding quality of the terminal piece in the circuit board is good, the driving cylinder 932 first drives the pressure block 933 to press the circuit board onto the plastic part, and the driving part 972 then drives the plug connector 962 to be plugged into the inside of the plastic part pin. The heat on the heating rod is transferred to the plug connector 962 through the copper block, and the plug connector 962 melts the solid plastic pin on the plastic part, so that the circuit board and the plastic part are reliably fixed.

[0078] like Figure 19 and Figure 20 As shown, the bottom shell automatic loading mechanism 4 includes a bottom shell silo 41 fixedly connected to the frame 01 for storing bottom shells, a conveyor belt device 42 installed below the bottom shell silo 41, a bottom shell vibration plate 43 fixedly connected to the frame 01 at the discharge port of the conveyor belt device 42, a bottom shell feeding channel 44 connected to the discharge port of the bottom shell vibration plate 43, a straight vibrator 45 fixedly connected to the frame 01 below the bottom shell feeding channel 44, and a bottom shell loading robot 46 installed at the discharge port of the bottom shell feeding channel 44 for transferring the bottom shell located on the bottom shell feeding channel 44 to the second turntable mechanism 03, wherein the bottom shell loading robot 46 includes a transverse manipulator 461 installed on the frame 01, a vertical manipulator 462 transmission-connected to the transverse manipulator 461, and a bottom shell clamping cylinder 463 installed below the vertical manipulator 462 and transmission-connected to the vertical manipulator 462.

[0079] Specifically, during operation, the bottom shell on the bottom shell hopper 41 falls onto the conveyor belt device 42, and the conveyor belt device 42 transports the bottom shell to the bottom shell vibration plate 43. The bottom shell vibration plate 43 transports the bottom shell to the bottom shell feeding channel 44 through vibration, and then the bottom shell is transported to the discharge port of the bottom shell feeding channel 44 through the vibration of the straight vibrator 45. The vertical manipulator 462 drives the bottom shell clamping cylinder 463 to descend, and the bottom shell clamping cylinder 463 clamps the bottom shell. At this time, the vertical manipulator 462 drives the bottom shell clamping cylinder 463 to rise, and the transverse manipulator 461 drives the bottom shell clamping cylinder 463 to move transversely. The vertical manipulator 462 drives the bottom shell clamping cylinder 463 to descend again, and the bottom shell clamping cylinder 463 places the bottom shell on the second turntable mechanism 03, realizing the automatic loading function of the bottom shell.

[0080] like Figure 21 As shown, the circuit board screening and transferring mechanism 7 includes a circuit board screening device 71 mounted on the rack 01 and a circuit board loading device 72 mounted on one side of the circuit board screening device 71;

[0081] like Figure 21 and Figure 22 As shown, the circuit board screening device 71 includes a first material dividing cylinder 711 and a slide rail 712 installed on the frame 01, a rack guide plate 713 installed on the slide rail 712 and transmission connected to the first material dividing cylinder 711, a second material dividing cylinder 714 installed on the rack guide plate 713, and a rack 715 transmission connected to the second material dividing cylinder 714. One side of the rack guide plate 713 is fixedly connected to a gear fixing seat 716, a gear 717 is rotatably connected in the gear fixing seat 716, and a circuit board clamping cylinder 718 is fixedly connected to the gear 717. It also includes a storage bin 719 installed below the circuit board clamping cylinder 718 for collecting defective circuit boards. The rack guide plate 713 is slidably connected to the slide rail 712, and the gear 717 is meshed with the rack 715 for transmission.

[0082] After the first rotating disk mechanism 714 is finished, the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started, and the second rotating disk mechanism 714 is started

[0083] like Figure 23 As shown, the detection mechanism 10 includes a column 101 fixedly connected to the frame 01, a first detection cylinder fixing seat 102 fixedly connected to the bottom of the column 101, a first detection cylinder 103 installed on the first detection cylinder fixing seat 102, a first probe fixing seat 104 transmission-connected to the first detection cylinder 103, a first probe 105 fixedly connected to the first probe fixing seat 104, a second cylinder fixing seat 106 fixedly connected to the top of the column 101, a second detection cylinder 107 installed on the second cylinder fixing seat 106, a second probe fixing seat 108 transmission-connected to the second detection cylinder 107, and a second probe 109 fixedly connected to the second probe fixing seat 108.

[0084] Specifically, during operation, the first detection cylinder 103 drives the first probe 105 to move upward, and the first probe 105 contacts the bottom of the relay. At the same time, the second detection cylinder 107 drives the second probe 109 to move downward, and the second probe 109 contacts the top of the relay, thereby automatically testing whether the internal part of the relay can be normally conductive. In addition, the first detection cylinder fixing base 102 and the second cylinder fixing base 106 can be adjusted up and down along the column 101 respectively, making the detection easier to debug.

[0085] like Figure 24 As shown, the bottom shell hot melt mechanism 5 includes a second pressing device 51 installed on the frame 01 for pressing the circuit board onto the bottom shell, and a second hot melt device 52 installed on one side of the second pressing device 51;

[0086] The second pressing device 51 includes a first pressing cylinder 511 and a second pressing cylinder 512 fixed on the frame 01, a first pressing block 513 drivingly connected to the first pressing cylinder 511, and a second pressing block 514 drivingly connected to the second pressing cylinder 512;

[0087] The second hot melt device 52 includes an electric cylinder fixing seat 521 fixedly connected to the frame 01 and installed between the first pressing cylinder 511 and the second pressing cylinder 512, an electric cylinder 522 fixedly connected to the electric cylinder fixing seat 521, a heating copper block 523 transmission-connected to the electric cylinder 522, an electric heating rod 524 fixedly connected to one side of the heating copper block 523, and a rivet head 525 fixedly connected below the heating copper block 523.

[0088] Specifically, the first clamping cylinder 511 drives the first clamping block 513 to move upward, and at the same time the second clamping cylinder 512 drives the second clamping block 514 to move downward. The first clamping block 513 and the second clamping block 514 work together to clamp the circuit board and the bottom shell. The electric cylinder 522 drives the heating rod 524 on the heating copper block 523 to contact the plastic pin in the bottom shell. After the plastic pin melts, it automatically fixes the circuit board and the bottom shell together.

[0089] like Figure 25 As shown, it also includes a flip printing mechanism 07 installed on the outside of the second turntable mechanism 03, and the flip printing mechanism 07 includes an ink pad 071 fixed on the frame 01, a flip cylinder 072 installed above the ink pad 071 and fixedly connected to the frame 01, a printing cylinder 073 transmission-connected to the flip cylinder 072, a print head 074 transmission-connected to the printing cylinder 073, a fixed cylinder 075 installed above the relay, and a clamping block 076 transmission-connected to the fixed cylinder 075, wherein ink is provided in the ink pad 071. During operation, the fixed cylinder 075 first drives the clamping block 076 to fix the relay, and at the same time, the printing cylinder 073 drives the print head 074 downward to contact the ink pad and reset, and then the flip cylinder 072 drives the print head 074 to rotate 90 degrees, and the printing cylinder 073 pushes the print head 074 to move again, and the print head 074 is pressed against the circuit board of the relay, realizing the function of automatic printing on the circuit board.

[0090] like Figure 26As shown, the unloading mechanism 6 includes a lifting cylinder 61 installed on the frame 01, a rotating cylinder 62 transmission-connected to the lifting cylinder 61, a bottom shell clamping cylinder 63 transmission-connected to the rotating cylinder 62, and also includes a good material channel 64 and a coloring device 65 installed on the frame 01. The coloring device 65 includes a first coloring cylinder 651 fixedly connected to the frame 01, a second coloring cylinder fixing seat 652 transmission-connected to the first coloring cylinder 651, a second coloring cylinder 653 fixedly connected to the second coloring cylinder fixing seat 652, a coloring pen fixing seat 654 transmission-connected to the second coloring cylinder 653, and a coloring pen 655 fixedly connected to the coloring pen fixing seat 654.

[0091] Specifically, during operation, the lifting cylinder 61 drives the bottom shell clamp cylinder 63 to move to the edge of the second turntable mechanism 03, and the bottom shell clamp cylinder 63 clamps the finished relay. At this time, the lifting cylinder 61 drives the bottom shell clamp cylinder 63 to rise, and the rotating cylinder 62 drives the bottom shell clamp cylinder 63 to rotate 180 degrees. At this time, the second coloring cylinder 653 drives the coloring pen 655 to contact the relay, and the first coloring cylinder 651 drives the coloring pen 655 to move horizontally. At this time, a straight line drawn by the coloring pen 655 is engraved on the relay, and the bottom shell clamp cylinder 63 releases the clamp, and the finished relay is discharged along the good product material channel 64.

[0092] To sum up, the present invention realizes the functions of automatically loading circuit boards, automatically feeding and assembling terminal pieces onto circuit boards, automatically detecting the resistance of circuit boards, automatically detecting the welding quality of terminal pieces, automatically screening qualified circuit boards, automatically feeding bottom shells, automatically assembling circuit boards onto bottom shells, automatically performing power on and off detection on relays, automatically hot-melting the circuit boards and bottom shells, automatically printing and coloring the circuit boards, and automatically screening finished products and unloading. It has a high degree of automation, high assembly efficiency, and well-guaranteed product quality.

[0093] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A relay base and circuit board automatic assembly machine, comprising a frame (01), characterized in that: It also includes a first turntable mechanism (02) for transporting circuit boards and a second turntable mechanism (03) for transporting bottom shells, which are installed on the frame (01); a circuit board loading mechanism (1) for automatically loading circuit boards, a terminal piece automatic feeding and assembly mechanism (2) for automatically loading terminal pieces and assembling them on the circuit boards, and a terminal piece touch welding mechanism (3) for welding the terminal pieces to the circuit boards are sequentially arranged on the outside of the first turntable mechanism (02); a bottom shell automatic loading mechanism (4) for automatically feeding the bottom shell, a bottom shell hot-melt mechanism (5) for hot-melt fixing the bottom shell and the circuit board, and a blanking mechanism (6) for automatically unloading finished products are sequentially arranged on the outside of the second turntable mechanism (03); a circuit board screening and transfer mechanism (7) for screening good circuit boards on the first turntable mechanism (02) and transferring them to the bottom shells assembled on the second turntable mechanism (03) is installed between the first turntable mechanism (02) and the second turntable mechanism (03); The terminal piece butt welding mechanism (3) comprises an upper frame (31) and a lower frame (32); the upper frame (31) is provided with a first butt welding cylinder (33) and a second butt welding cylinder (34) arranged adjacent to each other; the piston rod of the first butt welding cylinder (33) is fixedly connected to a first upper electrode butt welding device (35); the piston rod of the second butt welding cylinder (34) is fixedly connected to a second upper electrode butt welding device (36); the upper frame (31) is provided with a first guide device (37); the second butt welding cylinder (34) is fixedly connected to a second upper electrode butt welding device (36); An upper electrode butt welding device (35) and a second upper electrode butt welding device (36) are respectively capable of sliding freely along a first guide device (37); a third butt welding cylinder (38) is fixedly connected to the lower frame (32); a lower electrode butt welding device (39) is fixedly connected to the piston rod of the third butt welding cylinder (38); a second guide device (310) is provided on the lower frame (32); and the lower electrode butt welding device (39) is capable of sliding freely along the second guide device (310); The upper frame (31) includes a first support plate (311), a second support plate (312) installed below the first support plate (311) and fixedly connected to the first support plate (311), the first welding cylinder (33) and the second welding cylinder (34) are respectively fixed above the first support plate (311), and the upper end surface of the second support plate (312) is fixedly connected with a first buffer (313) and a second buffer (314), wherein the first buffer (313) is used to buffer the first upper electrode welding device (35) when it slides on the first guide device (37), and the second buffer (314) is used to buffer the second upper electrode welding device (36) when it slides on the second guide device (310); The apparatus further comprises a circuit board detection hot-melt mechanism (9) mounted on the outside of the first turntable mechanism (02) for detecting the welding quality of the terminal piece in the circuit board and hot-melting the plastic part on the circuit board, wherein the circuit board detection hot-melt mechanism (9) comprises a support (91) fixedly connected to the frame (01), an optical axis (92) fixedly connected to the support (91), a first pressing device (93) sleeved on the optical axis (92) for pressing the circuit board onto the plastic part, a light filling device (94) sleeved on the optical axis (92) for filling light on the surface of the circuit board, and a light filling device (95) sleeved on the optical axis. (92) A detection device (95) at the top for detecting whether the size of the circuit board assembly is qualified, the fill light device (94) is located between the first pressing device (93) and the detection device (95), and a first hot melt device (96) for hot melting the plastic part pin to fix the circuit board to the plastic part is installed on one side of the support (91), the first hot melt device (96) includes a copper block (961), at least one plug connector (962) installed on the copper block (961), and at least one heating rod (963) installed on the copper block (961); The first hot melt device (96) further comprises a driving device (97) for driving the plug connector (962) to be inserted into the bottom shell pin, the driving device (97) comprising a fixed seat (971), a driving member (972) fixedly connected to one side of the fixed seat (971), a linear bearing I (973) and a linear bearing II (974) fixed on the fixed seat (971), a first guide light axis (975) sleeved in the linear bearing I (973) and freely sliding along the linear bearing I (973), a second guide light axis (976) sleeved in the linear bearing II (974) and freely sliding along the linear bearing II (974), one end of the copper block (961) is fixedly connected to the first guide light axis (975), and the other end is fixedly connected to the second guide light axis (976), and the copper block (961) is transmission-connected to the driving member (972).

2. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: The circuit board loading mechanism (1) comprises a circuit board material tray (11) for storing circuit boards, a manipulator fixing frame (12) mounted on a machine frame (01), a horizontal material picking slide (13) mounted on the manipulator fixing frame (12), a vertical material picking slide (14) transmission-connected to the horizontal material picking slide (13), and a circuit board clamping cylinder (15) mounted below the vertical material picking slide (14).

3. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: The terminal piece automatic feeding and assembly mechanism (2) comprises a terminal piece automatic loading mechanism (21) mounted on a frame (01) for automatically feeding the terminal piece, a first terminal piece automatic assembly mechanism (22) mounted on one side of a discharge port of the terminal piece automatic loading mechanism (21) for transferring the terminal piece to be assembled on a circuit board, a second terminal piece automatic assembly mechanism (23) mounted on the other side of the discharge port of the terminal piece automatic loading mechanism (21), and a terminal piece clamping mechanism (24) mounted at the discharge port of the terminal piece automatic loading mechanism (21) for driving the terminal piece to be clamped on the circuit board.

4. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: It also includes a resistance detection device (8) installed outside the first turntable mechanism (02) for testing the resistance of the circuit board.

5. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: The bottom shell automatic feeding mechanism (4) comprises a bottom shell silo (41) fixedly connected to the frame (01) for storing bottom shells, a conveyor belt device (42) installed below the bottom shell silo (41), a bottom shell vibration plate (43) fixedly connected to the frame (01) installed at the discharge port of the conveyor belt device (42), a bottom shell feeding channel (44) connected to the discharge port of the bottom shell vibration plate (43), a straight vibrator (45) fixedly connected to the frame (01) installed below the bottom shell feeding channel (44), and a bottom shell feeding manipulator (46) installed at the discharge port of the bottom shell feeding channel (44) for transferring the bottom shell located on the bottom shell feeding channel (44) to the second turntable mechanism (03).

6. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: The circuit board screening and transfer mechanism (7) includes a circuit board screening device (71) mounted on a frame (01), and a circuit board loading device (72) mounted on one side of the circuit board screening device (71); The circuit board screening device (71) includes a first material distribution cylinder (711) and a slide rail (712) installed on the frame (01), a rack guide plate (713) installed on the slide rail (712) and connected to the first material distribution cylinder (711), a second material distribution cylinder (714) installed on the rack guide plate (713), and a rack (715) connected to the second material distribution cylinder (714). One side of the rack guide plate (713) is fixedly connected to a gear fixing seat (716), a gear (717) is rotatably connected in the gear fixing seat (716), and a circuit board clamping cylinder (718) is fixedly connected to the gear (717). The device also includes a storage bin (719) installed below the circuit board clamping cylinder (718) for collecting defective circuit boards. The rack guide plate (713) is slidably connected to the slide rail (712), and the gear (717) is meshed with the rack (715) for transmission.

7. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: It also includes a detection mechanism (10) arranged outside the second turntable mechanism (03) for performing internal on / off detection on the relay, the detection mechanism (10) including a column (101) fixedly connected to the frame (01), a first detection cylinder fixing seat (102) sleeved and fixedly connected below the column (101), A first detection cylinder (103) mounted on a first detection cylinder fixing seat (102), a first probe fixing seat (104) transmission-connected to the first detection cylinder (103), a first probe (105) fixedly connected to the first probe fixing seat (104), a second cylinder fixing seat (106) sleeved and fixedly connected above the column (101), a second detection cylinder (107) mounted on the second cylinder fixing seat (106), a second probe fixing seat (108) transmission-connected to the second detection cylinder (107), and a second probe (109) fixedly connected to the second probe fixing seat (108).

8. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: The bottom shell hot-melt mechanism (5) comprises a second pressing device (51) installed on the frame (01) for pressing the circuit board onto the bottom shell, and a second hot-melt device (52) installed on one side of the second pressing device (51); The second pressing device (51) includes a first pressing cylinder (511) and a second pressing cylinder (512) installed on the frame (01), a first pressing block (513) drivingly connected to the first pressing cylinder (511), and a second pressing block (514) drivingly connected to the second pressing cylinder (512); The second hot melt device (52) includes an electric cylinder fixing seat (521) fixedly connected to the frame (01) and installed between the first pressing cylinder (511) and the second pressing cylinder (512), an electric cylinder (522) fixedly connected to the electric cylinder fixing seat (521), a heating copper block (523) transmission-connected to the electric cylinder (522), an electric heating rod (524) fixedly connected to one side of the heating copper block (523), and a rivet head (525) fixedly connected below the heating copper block (523).

9. The automatic assembly machine for relay base and circuit board according to claim 1, characterized in that: The unloading mechanism (6) comprises a lifting cylinder (61) mounted on the frame (01), a rotating cylinder (62) transmission-connected to the lifting cylinder (61), a bottom shell clamping claw cylinder (63) transmission-connected to the rotating cylinder (62), and also comprises a good product material channel (64) and a coloring device (65) mounted on the frame (01). The coloring device (65) comprises a first coloring cylinder (651) fixedly mounted on the frame (01), a second coloring cylinder fixing seat (652) transmission-connected to the first coloring cylinder (651), a second coloring cylinder (653) fixedly connected to the second coloring cylinder fixing seat (652), a coloring pen fixing seat (654) transmission-connected to the second coloring cylinder (653), and a coloring pen (655) fixedly mounted on the coloring pen fixing seat (654).

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