Direct current motor circuit board installation production line

Abstract

The invention provides a direct current motor circuit board installation production line, and relates to the technical field of direct current motor production. The device comprises a material conveying device, a riveting assembly and a spot welding assembly, the material conveying device is provided with a plurality of material bearing pieces and can convey the direct-current motor in the feeding direction, the top of a machine shell of the direct-current motor is provided with a port used for installing a circuit board, the edge of the port is provided with clamping feet, the direct-current motor is internally provided with a separation support and a wiring terminal, and the wiring terminal is connected with the separation support. The circuit board is arranged on the separation support, a jack is formed in the circuit board, and the top end of the wiring terminal can penetrate through the jack and extend out of the jack; the riveting assembly and the spot welding assembly are sequentially arranged in the feeding direction, and the riveting assembly can abut against the wiring terminal and the clamping pin and bend and form the wiring terminal and the clamping pin so that the circuit board can abut between the clamping pin and the separation support; the spot welding assembly can be used for welding the wiring terminals and the circuit board through welding flux. The circuit board of the direct current motor can be automatically installed, and the installation efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of DC motor production, and in particular to a DC motor circuit board installation production line. Background Art

[0002] The existing DC motor generally includes a housing, a stator, a rotor, a partition bracket, a circuit board and an end cover for closing a mounting opening opened on the housing.

[0003] When assembling a DC motor, workers need to first process the clips on the edge of the mounting opening of the shell, then install the stator and rotor into the shell, and then install the partition bracket and circuit board into the shell, so that the partition bracket can separate the circuit board and the stator, and the terminal blocks extending from the stator can pass through the partition bracket and the through holes opened on the circuit board. Then use the riveting equipment to bend the clips and make the clips abut the circuit board against the partition bracket. Then use the soldering gun to weld the circuit board and the terminal blocks so that the stator can be electrically connected to the circuit board. Finally, install the end cover on the shell and close the mounting opening.

[0004] However, when installing the circuit board of the DC motor, both the riveting with the riveting equipment and the welding with the soldering gun need to be manually operated by workers, which makes the installation efficiency of the circuit board low.

[0005] In view of this, it is necessary to provide a DC motor circuit board installation production line. Summary of the invention

[0006] In order to solve the problem of low efficiency in the installation process of the circuit board of the existing DC motor, the present application provides a DC motor circuit board installation production line.

[0007] The present application provides a DC motor circuit board installation production line, which adopts the following technical scheme: comprising a feeding device, a riveting assembly and a spot welding assembly, wherein the feeding device is provided with a plurality of receiving parts for receiving the DC motor and can transport the DC motor along the feeding direction, the top of the housing of the DC motor is provided with a port for loading the circuit board, the edge of the port is provided with a clamping foot, the interior of the DC motor is provided with a partition bracket and a wiring terminal, the circuit board is placed on the partition bracket, and a socket is opened on the circuit board, and the top end of the wiring terminal can pass through the socket and extend outside the socket; The riveting assembly and the spot welding assembly are arranged in sequence along the feeding direction, and the riveting assembly can abut against the connecting terminal and the clamping foot and bend the connecting terminal and the clamping foot into shape, so that the circuit board is abutted between the clamping foot and the partition bracket; The spot welding assembly can weld the connection terminal and the circuit board with solder.

[0008] By adopting the above technical scheme, workers only need to first install the circuit board from the top port of the DC motor casing to the partition bracket and pass the top of the terminal block through the jack on the circuit board, and then place the DC motor on the receiving piece at the starting end of the feeding device along the feeding direction, so that the DC motor can be transported from the starting end to the end end through the feeding device, so that the DC motor can pass through the riveting assembly and the spot welding assembly in sequence; and the riveting assembly can abut against the terminal block and the clamping foot and bend the terminal block and the clamping foot into shape, so that the circuit board is riveted and fixed on the partition bracket by the clamping foot, and a gap is formed between the terminal block and the circuit board for easy solder filling, so that the spot welding assembly can solder the terminal block and the circuit board with solder, so that the circuit board can be electrically connected to the stator in the DC motor, and finally the installed DC motor is removed at the end end of the feeding device, and the automatic installation of the DC motor circuit board can be completed, and the installation efficiency is high.

[0009] Specifically, the riveting assembly includes a riveting frame, a pre-riveting unit and a molding unit, the molding unit is located between the pre-riveting unit and the spot welding assembly, the pre-riveting unit includes a pre-riveting drive cylinder and a pre-riveting mold, the cylinder body of the pre-riveting drive cylinder is arranged on the riveting frame, the piston rod of the pre-riveting drive cylinder is connected to the pre-riveting mold, and can drive the pre-riveting mold to approach or move away from the receiving piece located directly below the pre-riveting mold, and the pre-riveting mold is provided with a pre-riveting die head, which can abut and pre-bend the clamping foot; The forming unit includes a forming drive cylinder and a forming mold. The cylinder body of the forming drive cylinder is arranged on the riveting frame. The piston rod of the forming drive cylinder is connected to the forming mold and can drive the forming mold to approach or move away from the receiving part located directly below the forming mold. The forming mold can abut the connecting terminal and the pre-bent clamping foot, and press and bend the connecting terminal and the clamping foot into shape.

[0010] By adopting the above technical scheme, the pre-riveting drive cylinder can drive the pre-riveting die head to abut against the card foot and pre-bend the card foot, and the forming drive cylinder can drive the forming die to abut against the terminal and the pre-bent card foot, so as to be able to press and bend the terminal and the card foot into shape, thereby reducing the deformation degree of the card foot each time it is pressed and bent, avoiding the breakage of the bent part of the card foot due to excessive deformation at one time, and completely bending the card foot into shape through two riveting presses, so that the card foot is not prone to rebound after being bent.

[0011] Furthermore, the molding die comprises a molding die base, a fixed die head, a movable die head and a movable die driving cylinder, the top of the molding die base is connected to the piston rod of the molding driving cylinder, and the fixed die head is arranged at the bottom of the molding die base and can abut against the clamping foot; The movable die head is connected to the piston rod of the movable die driving cylinder, and the cylinder body of the movable die driving cylinder is connected to the forming die base. When the clamping pin is abutted between the fixed die head and the circuit board, the movable die head can abut against the part of the terminal extending out of the top of the socket, and the piston rod of the movable die driving cylinder can extend and drive the movable die head to bend the terminal into shape.

[0012] By adopting the above technical solution, the fixed die head can abut against the pre-bent clamping pin on the DC motor located directly below it and abut the clamping pin between the fixed die head and the circuit board, so that the clamping pin can be pressed and formed. When the clamping pin is pressed and formed, the piston rod of the movable die driving cylinder can extend and drive the movable die head to abut against the part of the terminal extending to the top of the circuit board, so that this part of the terminal can be pressed and formed.

[0013] Specifically, the spot welding assembly includes at least one welding unit, and the welding unit includes a welding device, a welding frame and a welding frame driving device. The welding device is arranged on the welding frame, and the welding driving device is transmission-connected to the welding frame and can drive the welding frame to drive the welding device to approach or move away from the terminal block located directly below the welding device, so as to weld the terminal block and the circuit board via the welding device.

[0014] By adopting the above technical solution, the welding frame driving device can drive the welding frame to drive the welding device to approach the terminal directly below the welding device, so that the welding device can drip molten solder on the bent part of the terminal, thereby connecting the terminal and the circuit board through the solder.

[0015] Furthermore, the welding unit also includes a camera device, which is arranged on the welding frame. When the welding device is away from the connecting terminal located directly below the welding device, the camera device can take a picture of the connecting terminal and the circuit board around the connecting terminal.

[0016] By adopting the above technical solution, the camera device can take pictures of the connection terminal and the circuit board around the connection terminal, so that the worker can judge whether the welding point is qualified through the image taken by the camera device.

[0017] Specifically, the feeding device includes a limit housing, a plurality of slides, an upper horizontal driving cylinder, a lower horizontal driving cylinder, a pair of lifting platforms and a pair of lifting driving cylinders. A limit groove is provided on the limit housing along the feeding direction. A partition plate is provided in the limit groove along the horizontal direction and is divided into an upper channel and a lower channel by the partition plate. Both ends of the partition plate are provided with connecting holes leading to the lower channel. There are an odd number of slides, each of which is provided with a material-bearing member on the top, a portion of the slides are arranged in the upper channel with their ends butted against each other to form a row of upper slide groups, which can slide along the upper channel, and another portion of the slides are arranged in the lower channel with their ends butted against each other to form a row of lower slide groups, which can slide along the lower channel; The upper horizontal drive cylinder is arranged at the starting end of the upper channel along the feeding direction, and the lower horizontal drive cylinder is arranged at the terminal end of the lower channel along the feeding direction. Each of the connecting holes is provided with a lifting platform, and the lifting platform can carry the slide and pass through the connecting hole together. Each lifting drive cylinder is connected to the corresponding lifting platform through transmission and can drive a pair of lifting platforms to rise and fall synchronously. When the pair of lifting platforms are both located in the lower channel, the piston rod of the lower horizontal driving cylinder can extend and push the slide on the lifting platform adjacent to it away from the lifting platform, so that the slide at one end of the lower descending group away from the lower horizontal driving cylinder moves to the lifting platform adjacent to the slide; When a pair of the lifting platforms are both located in the upper channel, the piston rod of the upper horizontal driving cylinder can extend and push the slide on the lifting platform adjacent to it away from the lifting platform, so that the slide at the end of the upper sliding group away from the upper horizontal driving cylinder moves to the lifting platform adjacent to the slide.

[0018] By adopting the above technical scheme, the lifting drive cylinder can drive the lifting platform to lift and lower, so as to drive the slide to pass through the connecting hole and interact between the upper channel and the lower channel through the lifting platform; the worker can first take out a slide from the multiple slides separately, and then divide the remaining slides into two groups and fill the two groups of slides into the upper channel and the lower channel respectively, and finally put the slide taken out separately on the lifting platform close to the lower horizontal driving cylinder, and then start each driving cylinder cyclically in the order of a pair of lifting platforms descending at the same time, the piston rod of the lower horizontal driving cylinder extending and retracting once, a pair of lifting platforms rising at the same time, and the piston rod of the upper horizontal driving cylinder extending and retracting once, so that the slide in the upper channel can first move from the starting end of the feeding device to the end end along the feeding direction, and then pass through the connecting hole to enter the lower channel, and finally move from the end end of the feeding device to the starting end in the lower channel in the direction opposite to the feeding direction and return to the upper channel again, thereby realizing the transportation of the DC motor.

[0019] Specifically, a nanomagnetic hole is provided on the material receiving member, and a magnetic member for adsorbing the housing is provided in the nanomagnetic hole.

[0020] By adopting the above technical solution, the magnetic component can absorb the housing of the DC motor, so that the bottom of the DC motor can be absorbed and fixed on the material receiving component.

[0021] Furthermore, a positioning hole is provided at the bottom of the housing, and a positioning pin matched with the positioning hole is provided on the material receiving member.

[0022] By adopting the above technical solution, the positioning pin can cooperate with the positioning hole to quickly locate the placement position of the DC motor, so that workers can place the DC motor on the material receiving piece.

[0023] Specifically, it also includes a plurality of gripper cylinders, which are arranged at intervals on one side of the feeding device along the feeding direction, and each of the gripper cylinders can clamp the DC motor on the material receiving member opposite to it.

[0024] By adopting the above technical solution, the clamping claw cylinder can clamp the DC motor on the receiving part to limit the position of the DC motor and ensure that the DC motor is not prone to shaking when being riveted or welded.

[0025] Specifically, a slot is provided at the top of the material receiving member, a liquid barrier film is provided in the slot in a horizontal direction, a receiving cavity for receiving a buffer solution is formed between the liquid barrier film and the bottom wall of the slot, and a magnetic attraction member for adsorbing the housing is provided on the bottom wall of the receiving cavity; A pair of buffer cavities are provided in the material receiving member along the feeding direction, the slot is provided between the pair of buffer cavities, a piston is provided in each of the buffer cavities, a liquid chamber is formed between the side of the piston facing away from the slot and the cavity wall of the buffer cavity, a liquid-free chamber is formed between the side of the piston facing the slot and the cavity wall of the buffer cavity, and a connecting hole for connecting with the buffer cavity is provided on the cavity wall of each of the liquid chambers; A sliding hole leading to the slot is provided on the cavity wall of each liquid-free chamber, and the length direction of each sliding hole is parallel to the feeding direction. The material receiving member further comprises a pair of sliding rods and a pair of abutting members, one end of each sliding rod is connected to the corresponding piston, and the other end of each sliding rod passes through the corresponding sliding hole and extends into the slot and is connected to the corresponding abutting member, and each sliding rod can slide in the corresponding sliding hole; The housing can be inserted into the slot and the elastic membrane can be abutted between the housing and the magnetic member under the attraction of the magnetic member, so as to drive a pair of pistons to approach the slot via the buffer and abut the housing between a pair of abutting members.

[0026] By adopting the above technical scheme, when the casing of the DC motor is inserted into the slot, the magnetic attraction piece can exert a downward attraction on the casing, so that the elastic membrane is deformed downward by the pressure of the casing and is finally abutted between the casing and the magnetic attraction piece, and the buffer originally located in the accommodating cavity will be squeezed into the liquid chamber in the two buffer cavities, so that the two pistons can be pushed close to the slot through the buffer and the casing can be abutted between a pair of abutting pieces; because when the DC motor is transported to the bottom of the riveting assembly or the spot welding assembly by the feeding device, the feeding device will stop first, and after the riveting assembly bends the clamping foot and the terminal or the spot welding assembly completes the welding operation, it will be started again and continue to transport the feeding device along the feeding direction. At the moment when the feeding device stops and restarts, a pair of abutting pieces will abut against the side wall of the casing and absorb the inertia force of the DC motor through the piston and the buffer, so that the DC motor on the receiving piece is not easy to shake and deviate due to its own inertia in the same or opposite direction as the feeding direction.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. It includes a feeding device, a riveting assembly and a spot welding assembly. The feeding device is provided with a plurality of receiving parts for receiving the DC motor and can transport the DC motor along the feeding direction. The top of the housing of the DC motor is provided with a port for loading the circuit board, and the edge of the port is provided with a clamping foot. The interior of the DC motor is provided with a partition bracket and a wiring terminal. The circuit board is placed on the partition bracket, and a plug hole is opened on the circuit board. The top of the wiring terminal can pass through the plug hole and extend outside the plug hole; the riveting assembly and the spot welding assembly are sequentially arranged along the feeding direction. The riveting assembly can abut against the wiring terminal and the clamping foot and bend the wiring terminal and the clamping foot into shape, so that the circuit board is abutted between the clamping foot and the partition bracket, so that the circuit board can be riveted and fixed on the partition bracket through the clamping foot; the spot welding assembly can weld the wiring terminal and the circuit board with solder, so that the circuit board can be electrically connected to the stator in the DC motor, so that the automatic installation of the DC motor circuit board can be completed, and the installation efficiency is high; 2. A slot is provided on the top of the material receiving member, and a liquid barrier membrane is provided in the slot in the horizontal direction, a receiving chamber for receiving a buffer solution is formed between the liquid barrier membrane and the bottom wall of the slot, and a magnetic attraction member for adsorbing the casing is provided on the bottom wall of the receiving chamber; a pair of buffer chambers are provided in the material receiving member along the feeding direction, and the slot is provided between the pair of buffer chambers, and a piston is provided in each buffer chamber, a liquid chamber is formed between the side of the piston facing away from the slot and the cavity wall of the buffer chamber, and a liquid-free chamber is formed between the side of the piston facing the slot and the cavity wall of the buffer chamber, and a connecting hole for communicating with the buffer chamber is provided on the cavity wall of each liquid chamber; a sliding hole leading to the slot is provided on the cavity wall of each liquid-free chamber, and the length direction of each sliding hole is parallel to the feeding direction. The material receiving member also includes A pair of slide bars and a pair of abutment members, one end of each slide bar is connected to the corresponding piston, the other end of each slide bar passes through the corresponding slide hole and extends into the slot and is connected to the corresponding abutment member, and each slide bar can slide in the corresponding slide hole; the casing can be inserted into the slot and the elastic membrane can be abutted between the casing and the magnetic member under the attraction of the magnetic member, so as to drive a pair of pistons close to the slot and abut the casing between the pair of abutment members through the buffer; and at the moment when the feeding device stops and restarts, the pair of abutment members will abut against the side wall of the casing and absorb the inertia force of the DC motor through the piston and the buffer, so that the DC motor on the material receiving member is not easy to shake and deviate in the same or opposite direction as the feeding direction due to its own inertia. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a stereogram of the first embodiment of the present application; Figure 2 It is an exploded view of the slide, the material-bearing member and the DC motor of the present application; Figure 3 is along Figure 1 A schematic cross-sectional view of the central axis of the feeding device in the length direction; Figure 4 is along Figure 3 A schematic cross-sectional view taken along the AA direction, wherein only a portion of the riveted frame is shown; Figure 5 is a stereogram of a second embodiment of the present application; Figure 6 is along Figure 5 A schematic cross-sectional view of the middle slide, the material receiving member and the DC motor taken along the central axis.

[0029] Figure numerals: 1, feeding device; 11, material receiving member; 111, magnetic member; 112, positioning needle; 113, liquid diaphragm; 114, magnetic member; 115, piston; 116, abutment member; 12, limit housing; 121, partition plate; 1211, connecting hole; 122, upper slide group; 123, lower slide group; 13, slide seat; 14, upper horizontal drive cylinder; 15, lower horizontal drive cylinder; 16, lifting platform; 17, lifting drive cylinder; 2, riveting assembly; 21, riveting frame; 22, pre-riveting unit; 221. Pre-riveting drive cylinder; 222. Pre-riveting mold; 23. Molding unit; 231. Molding drive cylinder; 232. Molding mold; 2321. Molding mold base; 2322. Fixed mold head; 2323. Moving mold head; 2324. Moving mold drive cylinder; 3. Spot welding assembly; 31. Welding unit; 311. Welding device; 312. Welding frame; 313. Welding frame drive device; 314. Camera device; 4. DC motor; 41. Clamping foot; 42. Wiring terminal; 5. Gripping cylinder; 6. Workbench. DETAILED DESCRIPTION

[0030] Figure 1 is a stereogram of the first embodiment of the present application, Figure 2 This is an exploded view of the slide, the material bearing member and the DC motor of the present application. Figure 1 and Figure 2 In the first embodiment provided by the present application, a DC motor circuit board installation production line includes a workbench 6, a feeding device 1, a riveting assembly 2 and a spot welding assembly 3, and the feeding device 1 includes a limit housing 12, a plurality of slides 13, an upper horizontal drive cylinder 14, a lower horizontal drive cylinder 15, a pair of lifting platforms 16 and a pair of lifting drive cylinders 17; Figure 3 is along Figure 1 A schematic cross-sectional view of the central axis of the feeding device in the length direction, combined with Figure 3The limit housing 12 is arranged on the workbench 6, and a limit groove is provided on the limit housing 12 along the feeding direction. A partition plate 121 is provided in the limit groove along the horizontal direction and is divided into an upper channel and a lower channel by the partition plate 121. Connecting holes 1211 leading to the lower channel are provided at both ends of the partition plate 121; there are an odd number of slides 13, and a material receiving member 11 is provided on the top of each slide 13. A part of the slides 13 are arranged in the upper channel with their heads and tails against each other and form a row of upper slide groups 122, which can slide along the upper channel, and another part of the slides 13 are arranged in the lower channel with their heads and tails against each other and form a row of upper slide groups 122. The upper slide groups 122 can slide along the upper channel, and the other part of the slides 13 are arranged in the lower channel with their heads and tails against each other and form a row of upper slide groups 122. It forms a row of downward sliding groups 123, which can slide along the lower channel; the upper horizontal driving cylinder 14 is arranged at the starting end of the upper channel along the feeding direction, and the lower horizontal driving cylinder 15 is arranged at the terminal end of the lower channel along the feeding direction. A lifting platform 16 is provided at each connecting hole 1211, and the lifting platform 16 can carry the slide 13 through the connecting hole 1211. Each lifting driving cylinder 17 is connected to the corresponding lifting platform 16 by transmission and can drive a pair of lifting platforms 16 to rise and fall synchronously, so that the slide 13 can be driven by the lifting platform 16 to pass through the connecting hole 1211 and interact between the upper channel and the lower channel.

[0031] Through the above arrangement, taking the number of slides 13 as 15 as an example, the worker can first take out a slide 13 from the 15 slides 13 separately, and then divide the remaining slides 13 into two groups and fill the two groups of slides 13 into the upper channel and the lower channel respectively, and finally place the separately taken slide 13 on the lifting platform 16 close to the lower horizontal driving cylinder 15, and then cyclically start each driving cylinder in the order of a pair of lifting platforms 16 descending at the same time, the piston 115 rod of the lower horizontal driving cylinder 15 extending and retracting once, a pair of lifting platforms 16 rising at the same time, and the piston 115 rod of the upper horizontal driving cylinder 14 extending and retracting once, so that the slide 13 in the upper channel can first move from the starting end to the end end of the feeding device 1 along the feeding direction, and then pass through the connecting hole 1211 to enter the lower channel, and finally move from the end end of the feeding device 1 to the starting end in the lower channel in the direction opposite to the feeding direction and return to the upper channel again, thereby realizing the transportation of the DC motor 4. When the clamping pin 41 is abutted between the fixed die head 2322 and the circuit board, the movable die head 2323 can abut against the portion of the terminal 42 extending out of the top of the socket, and the piston 115 rod of the movable die drive cylinder 2324 can extend and drive the movable die head 2323 to bend the terminal 42 into shape.

[0032] See also Figure 1 and Figure 2A nanomagnetic hole is provided on the material receiving piece 11, and a magnetic piece 111 for adsorbing the casing is provided in the nanomagnetic hole, so that the bottom of the DC motor 4 can be adsorbed and fixed on the material receiving piece 11; a port for loading a circuit board is provided on the top of the casing of the DC motor 4, and three clamping feet 41 are provided on the edge of the port at equal intervals around the center of the port; a partition bracket and two wiring terminals 42 are provided inside the DC motor 4, and the circuit board is arranged above the partition bracket and has two sockets, and the top of each wiring terminal 42 can pass through a corresponding socket and extend to the top of the circuit board; a positioning hole is provided at the bottom of the casing, and a positioning pin 112 adapted to the positioning hole is provided on the material receiving piece 11, so that the casing can be quickly positioned when the DC motor 4 is placed through the cooperation of the positioning pin 112 and the positioning hole, so that the workers can place the DC motor 4 on the material receiving piece 11.

[0033] Figure 4 is along Figure 3 A schematic cross-sectional view taken along the AA direction, wherein only a portion of the riveted frame is shown. Figure 3 and Figure 4 The riveting assembly 2 includes a riveting frame 21, a pre-riveting unit 22 and a molding unit 23. The riveting frame 21 and the spot welding assembly 3 are sequentially arranged on the workbench 6 along the feeding direction. The molding unit 23 is located between the pre-riveting unit 22 and the spot welding assembly 3. The pre-riveting unit 22 includes a pre-riveting drive cylinder 221 and a pre-riveting mold 222. The cylinder body of the pre-riveting drive cylinder 221 is arranged on the riveting frame 21. The piston 115 rod of the pre-riveting drive cylinder 221 is connected to the pre-riveting mold 222 and can drive the pre-riveting mold 222 to approach or move away from the receiving piece 11 directly below the pre-riveting mold 222. The pre-riveting mold 222 is provided with three pre-riveting die heads, each of which can abut against a corresponding one of the clamping feet 41 and pre-bend the clamping foot 41.

[0034] See also Figure 3 and Figure 4The molding unit 23 includes a molding drive cylinder 231 and a molding die 232. The cylinder body of the molding drive cylinder 231 is arranged on the riveting frame 21. The piston 115 rod of the molding drive cylinder 231 is connected to the molding die 232 and can drive the molding die 232 to approach or move away from the receiving piece 11 located directly below the molding die 232. The molding die 232 includes a molding die base 2321, three fixed die heads 2322, a pair of movable die heads 2323 and a pair of movable die drive cylinders 2324. The top of the molding die base 2321 is connected to the piston 115 rod of the molding drive cylinder 231. The three fixed die heads 2322 are arranged on the molding die base 2 At the bottom of 321, each fixed die head 2322 can abut against a corresponding one of the clamping feet 41; a pair of movable die driving cylinders 2324 are relatively arranged at the bottom of the forming die base 2321, and each movable die head 2323 is connected to a piston 115 rod of a movable die driving cylinder 2324, and when the three clamping feet 41 are abutted on the circuit board by the corresponding fixed die heads 2322, the piston 115 rods of the two movable die driving cylinders 2324 can simultaneously extend and drive the movable die heads 2323 to abut against the part of a corresponding one of the wiring terminals 42 extending to the top of the circuit board, so as to be able to bend this part of the wiring terminal 42 toward the center of the circuit board.

[0035] Through the above-mentioned arrangement, the pre-riveting drive cylinder 221 can drive the pre-riveting die head to abut against the clamping foot 41 and pre-bend the clamping foot 41, and the forming drive cylinder 231 can drive the forming die 232 to abut against the connecting terminal 42 and the pre-bent clamping foot 41, so as to be able to press and bend the connecting terminal 42 and the clamping foot 41 into shape, thereby reducing the deformation degree of the clamping foot 41 each time it is pressed and bent, and avoiding the breakage of the bending part of the clamping foot 41 due to excessive deformation at one time, and the clamping foot 41 can be completely bent and formed through two riveting presses, so that the clamping foot 41 is not prone to rebound after being bent.

[0036] See also Figure 1 and Figure 3The spot welding assembly 3 includes four groups of welding units 31, and the connecting terminals 42 that are welded by two adjacent groups of welding units 31 are different, so that the connecting terminals 42 to be welded can be welded once with tin material and then repaired once; each group of welding units 31 includes a welding device 311, a welding frame 312 and a driving device for the welding frame 312, the welding frame 312 is arranged on the workbench 6, the welding device 311 is arranged on the welding frame 312, and the welding device 311 includes a storage barrel for heating and storing molten tin material, and a storage barrel arranged at the bottom of the storage barrel. The welding drive device is connected to the welding frame 312 in a transmission connection, and can drive the welding frame 312 to drive the discharge needle to approach or move away from the terminal 42 directly below the discharge needle. The gas source can pressurize the storage barrel through the pressure supply pipe when the discharge needle approaches the terminal 42, so that the molten solder drips from the discharge needle onto the bent part of the terminal 42, so that the terminal 42 and the circuit board can be connected by the solder.

[0037] See also Figure 1 and Figure 3 The welding unit 31 also includes a camera device 314, which is arranged on the welding frame 312. When the welding device 311 is away from the connecting terminal 42 located directly below the welding device 311, the camera device 314 can shoot the connecting terminal 42 and the circuit board around the connecting terminal 42, so that the worker can judge whether the welding point is qualified through the image taken by the camera device 314.

[0038] See also Figure 1 and Figure 3 A DC motor circuit board installation production line also includes 5 clamping cylinders 5, which are arranged at intervals on the side of the limit shell 12 away from the riveting frame 21 along the feeding direction. Each clamping cylinder 5 can clamp the DC motor 4 on the material receiving part 11 opposite to it, so that the position of the DC motor 4 can be limited by these clamping cylinders 5 to ensure that the DC motor 4 is not easy to shake when being riveted or welded.

[0039] The following is a specific use process of a DC motor circuit board installation production line of this application: The worker needs to first install the circuit board from the top port of the housing of the DC motor 4 onto the partition bracket and pass the top of the terminal 42 through the jack on the circuit board, and then place the DC motor 4 on the material receiving member 11 at the starting end of the upper channel of the limiting housing 12 along the feeding direction, so that the DC motor 4 can be transported from the starting end to the end end through the cooperation of the upper horizontal driving cylinder 14, the lower horizontal driving cylinder 15 and a pair of lifting driving cylinders 17, so that the DC motor 4 can pass through the riveting assembly 2 and the spot welding assembly 3 in sequence; and the riveting assembly 2 It can abut against the connecting terminal 42 and the clamping foot 41 and bend the connecting terminal 42 and the clamping foot 41 into shape, so that the circuit board is riveted and fixed on the partition bracket by the clamping foot 41, and a gap convenient for solder filling is formed between the connecting terminal 42 and the circuit board, so that the spot welding component 3 can weld the connecting terminal 42 and the circuit board with solder, so that the circuit board can be electrically connected to the stator in the DC motor 4, and finally the installed DC motor 4 is removed at the terminal end of the feeding device 1, and the automatic installation of the circuit board of the DC motor 4 can be completed, and the installation efficiency is high.

[0040] Figure 5 is a stereogram of a second embodiment of the present application, Figure 6 is along Figure 5 Schematic cross-sectional view of the middle slide, the material bearing and the DC motor along the center axis. Figure 5 and Figure 6 In the second embodiment provided by the present application, a slot is provided at the top of the material receiving member 11, and a liquid barrier membrane 113 is provided in the slot in the horizontal direction, and a receiving chamber for receiving a buffer solution is formed between the liquid barrier membrane 113 and the bottom wall of the slot, and a magnetic attraction member 114 for adsorbing the casing is provided on the bottom wall of the receiving chamber; a pair of buffer chambers are provided in the material receiving member 11 along the feeding direction, and the slot is provided between the pair of buffer chambers, and a piston 115 is provided in each buffer chamber, and a liquid chamber is formed between the side of the piston 115 facing away from the slot and the cavity wall of the buffer chamber, and a liquid-free chamber is formed between the side of the piston 115 facing the slot and the cavity wall of the buffer chamber, and a magnetic attraction member 114 for adsorbing the casing is provided on the wall of each liquid chamber. A connecting hole 1211 connecting the punching cavity; a sliding hole leading to the slot is opened on the cavity wall of each liquid-free chamber, and the length direction of each sliding hole is parallel to the feeding direction. The material receiving member 11 also includes a pair of sliding rods and a pair of abutment members 116, one end of each sliding rod is connected to the corresponding piston 115, and the other end of each sliding rod passes through the corresponding sliding hole and extends into the slot and is connected to the corresponding abutment member 116, and each sliding rod can slide in the corresponding sliding hole; the casing can be inserted into the slot and the elastic membrane can be abutted between the casing and the magnetic member 114 under the attraction of the magnetic member 114, so as to drive a pair of pistons 115 close to the slot through the buffer and abut the casing between the pair of abutment members 116.

[0041] Through the above arrangement, when the housing of the DC motor 4 is inserted into the slot, the magnetic member 114 can exert a downward attraction on the housing, so that the elastic membrane is deformed downward by the pressure of the housing and is finally abutted between the housing and the magnetic member 114, and the buffer originally located in the accommodating cavity is squeezed into the liquid chambers in the two buffer cavities, so that the two pistons 115 can be pushed close to the slot by the buffer and the housing is abutted between a pair of abutting members 116; because when the DC motor 4 is transported to the riveting assembly 2 or the spot welding assembly by the feeding device 1 When the feeding device 1 is under the material receiving part 3, the feeding device 1 will stop first, and after the riveting component 2 has bent the clamping foot 41 and the terminal 42 or the spot welding component 3 has completed the welding operation, it will be started again and continue to transport the feeding device 1 along the feeding direction. At the moment when the feeding device 1 stops and restarts, a pair of abutment members 116 will abut against the side wall of the casing and absorb the inertia force of the DC motor 4 through the piston 115 and the buffer, so that the DC motor 4 on the material receiving part 11 is not easy to shake or deviate due to its own inertia in the same or opposite direction as the feeding direction.

[0042] The implementation principle of a DC motor circuit board installation production line described in this application is: The invention comprises a feeding device 1, a riveting assembly 2 and a spot welding assembly 3. The feeding device 1 is provided with a plurality of receiving members 11 for receiving a DC motor 4 and can transport the DC motor 4 along a feeding direction. The top of the housing of the DC motor 4 is provided with a port for loading a circuit board, and a clamping foot 41 is provided on the edge of the port. A partition bracket and a wiring terminal 42 are provided inside the DC motor 4. The circuit board is placed on the partition bracket, and a socket is provided on the circuit board. The top end of the wiring terminal 42 can pass through the socket and extend outside the socket. The riveting assembly 2 The spot welding components 3 are arranged sequentially along the feeding direction, the rivet components 2 can abut against the connecting terminals 42 and the clamping feet 41 and bend the connecting terminals 42 and the clamping feet 41 into shape, so that the circuit board is abutted between the clamping feet 41 and the partition bracket, so that the circuit board can be riveted and fixed on the partition bracket through the clamping feet 41; the spot welding components 3 can weld the connecting terminals 42 and the circuit board with solder, so that the circuit board can be electrically connected to the stator in the DC motor 4, thereby completing the automatic installation of the circuit board of the DC motor 4, and the installation efficiency is high.

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A DC motor circuit board installation production line, used for installing circuit boards in DC motors, characterized by: The invention comprises a feeding device (1), a riveting assembly (2) and a spot welding assembly (3); the feeding device (1) is provided with a plurality of receiving members (11) for receiving a DC motor (4) and is capable of conveying the DC motor (4) along a feeding direction; a port for loading a circuit board is provided at the top of a housing of the DC motor (4); a clamping foot (41) is provided at the edge of the port; a partition bracket and a wiring terminal (42) are provided inside the DC motor (4); the circuit board is placed on the partition bracket, and a socket is provided on the circuit board; the top end of the wiring terminal (42) can pass through the socket and extend outside the socket; The riveting assembly (2) and the spot welding assembly (3) are arranged in sequence along the feeding direction, and the riveting assembly (2) is capable of abutting against the connecting terminal (42) and the clamping foot (41) and bending the connecting terminal (42) and the clamping foot (41) into shape, so that the circuit board is abutted between the clamping foot (41) and the partition bracket; The spot welding assembly (3) is capable of welding the connection terminal (42) and the circuit board using solder.

2. A DC motor circuit board installation production line according to claim 1, characterized in that: The riveting assembly (2) comprises a riveting frame (21), a pre-riveting unit (22) and a molding unit (23); the molding unit (23) is located between the pre-riveting unit (22) and the spot welding assembly (3); the pre-riveting unit (22) comprises a pre-riveting drive cylinder (221) and a pre-riveting die (222); the cylinder body of the pre-riveting drive cylinder (221) is arranged on the riveting frame (21); the piston (115) rod of the pre-riveting drive cylinder (221) is connected to the pre-riveting die (222) and can drive the pre-riveting die (222) to approach or move away from the receiving piece (11) located directly below the pre-riveting die (222); the pre-riveting die (222) is provided with a pre-riveting die head, and the pre-riveting die head can abut against and pre-bend the clamping foot (41); The molding unit (23) comprises a molding drive cylinder (231) and a molding die (232); the cylinder body of the molding drive cylinder (231) is arranged on the riveting frame (21); the piston (115) rod of the molding drive cylinder (231) is connected to the molding die (232) and can drive the molding die (232) to approach or move away from the receiving member (11) located directly below the molding die (232); the molding die (232) can abut against the connecting terminal (42) and the pre-bent clamping foot (41), and press and bend the connecting terminal (42) and the clamping foot (41) into shape.

3. A DC motor circuit board installation production line according to claim 2, characterized in that: The molding die (232) comprises a molding die base (2321), a fixed die head (2322), a movable die head (2323) and a movable die driving cylinder (2324); the top of the molding die base (2321) is connected to the piston (115) rod of the molding driving cylinder (231); the fixed die head (2322) is arranged at the bottom of the molding die base (2321) and can abut against the clamping foot (41); The movable die head (2323) is connected to the piston (115) rod of the movable die driving cylinder (2324), and the cylinder body of the movable die driving cylinder (2324) is connected to the molding die base (2321). When the clamping foot (41) is abutted between the fixed die head (2322) and the circuit board, the movable die head (2323) can abut against the part of the connecting terminal (42) extending out of the top of the socket, and the piston (115) rod of the movable die driving cylinder (2324) can extend and drive the movable die head (2323) to press and bend the connecting terminal (42) into shape.

4. A DC motor circuit board installation production line according to claim 1, characterized in that: The spot welding assembly (3) comprises at least one welding unit (31), wherein the welding unit (31) comprises a welding device (311), a welding frame (312) and a welding frame (312) driving device, wherein the welding device (311) is arranged on the welding frame (312), and the welding driving device is in driving connection with the welding frame (312) and is capable of driving the welding frame (312) to drive the welding device (311) to approach or move away from the connecting terminal (42) located directly below the welding device (311), so as to weld the connecting terminal (42) and the circuit board via the welding device (311).

5. A DC motor circuit board installation production line according to claim 4, characterized in that: The welding unit (31) further comprises a camera device (314), which is arranged on the welding frame (312); when the welding device (311) is away from the connecting terminal (42) located directly below the welding device (311), the camera device (314) can take a picture of the connecting terminal (42) and the circuit board around the connecting terminal (42).

6. A DC motor circuit board installation production line according to claim 1, characterized in that: The feeding device (1) comprises a limit housing (12), a plurality of slides (13), an upper horizontal driving cylinder (14), a lower horizontal driving cylinder (15), a pair of lifting platforms (16) and a pair of lifting driving cylinders (17); a limit groove is provided on the limit housing (12) along the feeding direction; a partition plate (121) is provided in the limit groove along the horizontal direction and is divided into an upper channel and a lower channel by the partition plate (121); and connecting holes (1211) leading to the lower channel are provided at both ends of the partition plate (121); The slide seats (13) are an odd number, and a material receiving member (11) is provided on the top of each slide seat (13). A portion of the slide seats (13) are arranged in the upper channel with their ends butted against each other to form a row of upper slide groups (122), and the upper slide groups (122) can slide along the upper channel. Another portion of the slide seats (13) are arranged in the lower channel with their ends butted against each other to form a row of lower slide groups (123), and the lower slide groups (123) can slide along the lower channel. The upper horizontal drive cylinder (14) is arranged at the starting end of the upper channel along the feeding direction, and the lower horizontal drive cylinder (15) is arranged at the terminal end of the lower channel along the feeding direction. A lifting platform (16) is respectively arranged at each of the connecting holes (1211), and the lifting platform (16) can carry the slide seat (13) and pass through the connecting hole (1211). Each lifting drive cylinder (17) is connected to the corresponding lifting platform (16) by transmission and can drive a pair of lifting platforms (16) to rise and fall synchronously. When a pair of the lifting platforms (16) are both located in the lower channel, the piston (115) rod of the lower horizontal drive cylinder (15) can extend and push the slide (13) on the adjacent lifting platform (16) away from the lifting platform (16), so that the slide (13) at one end of the lower descending group (123) away from the lower horizontal drive cylinder (15) moves to the lifting platform (16) adjacent to the slide (13); When a pair of the lifting platforms (16) are both located in the upper channel, the piston (115) rod of the upper horizontal driving cylinder (14) can extend and push the slide (13) on the adjacent lifting platform (16) away from the lifting platform (16), so that the slide (13) at one end of the upper slide group (122) away from the upper horizontal driving cylinder (14) moves to the lifting platform (16) adjacent to the slide (13).

7. A DC motor circuit board installation production line according to claim 1, characterized in that: The material receiving member (11) is provided with a nanomagnetic hole, in which a magnetic member (111) for adsorbing the housing is provided.

8. A DC motor circuit board installation production line according to claim 7, characterized in that: A positioning hole is provided at the bottom of the housing, and a positioning pin (112) matching the positioning hole is provided on the material receiving member (11).

9. A DC motor circuit board installation production line according to claim 1, characterized in that: It also includes a plurality of gripper cylinders (5), which are arranged at intervals on one side of the feeding device (1) along the feeding direction, and each of the gripper cylinders (5) is capable of clamping the DC motor (4) on the material receiving member (11) opposite thereto.

10. A DC motor circuit board installation production line according to claim 1, characterized in that: A slot is provided at the top of the material receiving member (11), a liquid isolating membrane (113) is provided in the slot in a horizontal direction, a receiving cavity for receiving a buffer solution is formed between the liquid isolating membrane (113) and the bottom wall of the slot, and a magnetic attraction member (114) for adsorbing the housing is provided on the bottom wall of the receiving cavity; A pair of buffer cavities are arranged in the material receiving member (11) along the feeding direction, the slot is arranged between the pair of buffer cavities, each buffer cavity is provided with a piston (115), a liquid chamber is formed between the side of the piston (115) facing away from the slot and the cavity wall of the buffer cavity, a liquid-free chamber is formed between the side of the piston (115) facing the slot and the cavity wall of the buffer cavity, and a connecting hole (1211) for connecting with the buffer cavity is arranged on the cavity wall of each liquid chamber; A sliding hole leading to the slot is provided on the cavity wall of each liquid-free chamber, and the length direction of each sliding hole is parallel to the feeding direction. The material receiving member (11) further comprises a pair of sliding rods and a pair of abutting members (116), one end of each sliding rod is connected to the corresponding piston (115), and the other end of each sliding rod passes through the corresponding sliding hole and extends into the slot and is connected to the corresponding abutting member (116), and each sliding rod can slide in the corresponding sliding hole; The housing can be inserted into the slot and, under the attraction of the magnetic element (114), the elastic membrane can be abutted between the housing and the magnetic element (114), so as to drive a pair of pistons (115) close to the slot via the buffer and abut the housing between a pair of abutting elements (116).

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