A micro motor automatic assembly machine

Abstract

A micro motor automatic assembly machine is used for assembling 104 capacitors and gears, which includes a frame, a control host, a feeding workbench, a discharging workbench, a feeding device, a capacitor arranging device, a pin correction device, a capacitor assembly device, a capacitor post-assembly shaping device, a capacitor welding device, a gear assembly device and a discharging device. The remaining components other than the frame are installed on the frame. The control host is connected with the feeding device, the capacitor arranging device, the pin correction device, the capacitor assembly device, the capacitor post-assembly shaping device, the capacitor welding device, the gear assembly device and the discharging device, so as to realize the automatic assembly of 104 capacitors and gears on the micro motor. The invention has the advantages of high equipment automation, high production efficiency, low assembly cost, and small influence of human factors on product quality.

Description

Technical Field

[0001] The invention belongs to the field of mechanical equipment, in particular to the field of automatic assembly, and specifically to automatic assembly equipment for small motor parts. Background Art

[0002] With the widespread application of industrial automation technology and the increasing requirements of modern production for reducing product assembly costs, improving production efficiency and improving product quality, the demand for automatic assembly machinery is also increasing.

[0003] The existing assembly production of micro motors is generally carried out manually with simple assembly machinery or automatically in a single process. The equipment has a low degree of automation, low production efficiency, high assembly cost, and the product quality is greatly affected by human factors. Summary of the invention

[0004] In the production process of micro motors, the assembly welding of external 104 capacitors and the press-fit assembly of gears have the problems of high manual assembly production cost, low production efficiency and unstable welding quality.

[0005] In order to solve the above problems, the present invention proposes a micro motor external 104 capacitor and gear automatic assembly machine, hereinafter referred to as the automatic assembly machine.

[0006] The automatic assembly machine is a fully automatic assembly equipment, which can realize the assembly and welding of the external 104 capacitor of the micro motor and the press-in assembly of the gear. It includes a frame, a control host, a feeding workbench, a discharging workbench, a feeding device, a capacitor arranging device, a pin correction device, a capacitor assembly device, a capacitor post-assembly shaping device, a capacitor welding device, a gear assembly device and a discharging device.

[0007] The capacitor 104 is referred to as capacitor hereinafter.

[0008] The frame is used to fix and install the remaining components of the automatic assembly machine, and can be a frame structure or a box structure, and can be a single whole or divided into a main frame and an auxiliary frame to facilitate the position adjustment of specific components.

[0009] The control host is used to receive the signal provided by the sensor and control all the execution components through the program. The execution components can be cylinders or pneumatic clamps. Equivalently, they can also be hydraulic cylinders and hydraulic clamps or electric cylinders and electric clamps. The execution components can also be conveyor belts, signal lights, buzzers and other components that require program control. The control host is fixedly installed on the upper part of the automatic assembly machine, suitable for the operator to monitor the operation.

[0010] The feeding workbench is installed on the frame of the feeding end of the automatic assembly machine and is used for placing and arranging the semi-finished micro motors to be fed into the automatic assembly machine.

[0011] The feeding device is connected to the feeding workbench in parallel and installed on the frame. The micro motor semi-finished products arranged in a row on the feeding workbench can be pushed onto the conveyor belt of the feeding device, and the conveyor belt sends the micro motor semi-finished products to the next process.

[0012] The discharging device and the feeding device are arranged horizontally and side by side, and there is an overlapped area in the middle of the two. Both of them have conveyor belts adapted to the size of the motor, and the head and tail of the micro motor can be limited in the width direction so that the micro motors are neatly arranged on the conveyor belt. A micro motor pushing device is arranged on the side of the end of the conveyor belt of the feeding device, which can push the micro motors neatly and closely arranged on the conveyor belt of the feeding device into the conveyor belt of the discharging device according to the instructions of the control host, and then enter the subsequent working positions in turn to assemble the capacitor and the gear, and finally transport the assembled micro motors to the discharging workbench position, and the discharging is packaged into boxes.

[0013] The capacitor arranging device includes a vibration plate and an arranging guide rail. The vibration plate is used to store the capacitors to be assembled and send the capacitors out of the vibration plate along an internal spiral ascending track through vibration. Although the vibration plate can arrange the capacitors into a continuous row and send them out of the vibration plate continuously or intermittently, since the capacitor has two pins, the vibration plate cannot make the capacitor pins face the same direction.

[0014] The entire row of guide rails is installed on the upper edge of the vibration plate, and has an open annular V-shaped groove structure. The bottom of the groove is lower than the inner and outer edges. According to different functions, it is divided into a connecting section, an inner drop screening section, an outer drop screening section and a narrow rail screening section.

[0015] The connecting section is used to receive the capacitors sent by the vibration plate, and the edges on both sides of its V-shaped groove are wide; the inner falling screening section is connected to the aforementioned connecting section, and the width of the inner edge of its V-shaped groove gradually narrows, so that the capacitors that cannot be arranged in a row at the bottom of the V-shaped groove and are accumulated on the inner edge of the entire row of guide rails fall from the inside to the receiving plate;

[0016] The outer screening section is connected to the inner screening section, and the outer edge of its V-groove suddenly narrows, so that the capacitors that cannot be arranged in a row at the bottom of the V-groove of the entire row of guide rails and are accumulated on the outer edge of the entire row of guide rails fall from the outside to the receiving tray; through the joint action of the inner screening section and the outer screening section, the capacitors form a single queue arrangement on the entire row of guide rails.

[0017] The narrow-track screening section is connected to the aforementioned outer-falling screening section, and its V-shaped groove is deformed into an inner edge vertically set, and the outer edge becomes a horizontal or nearly horizontal arc-shaped guide rail. The width of the outer side of the guide rail or the bottom edge is 1.5-2 times the width of the capacitor head, so that the capacitor with the head facing outward can fall into the receiving tray. The inner edge of the guide rail contains a strip permanent magnet, which has an attraction effect on the capacitor head, so that the capacitor head can face the inside of the vibration disk. There is a limit bar above the middle of the narrow-track screening section, which can make the capacitor standing up move along the guide rail and hit the limit bar and fall horizontally on the bottom edge of the guide rail or fall from the outside into the receiving tray. The function of the narrow-track screening section is to further screen and arrange the capacitors that have formed a single queue into a sequence of heads facing inward and pins facing outward in the same direction. A light sensor is provided at the end of the narrow-track screening section. When a capacitor is arranged at the end of the entire guide rail, the vibration disk stops working to prevent the capacitor from being piled up and falling before being taken away by the next process.

[0018] The pin correction device includes a material picker, a pin fixing clamp and a pin correction clamp, and its function is to transfer the capacitors arranged at the end of the guide rail of the capacitor arranging device and correct the two pins of the capacitor so that the distance between the two pins of the capacitor is consistent and suitable for the use requirements of the next process.

[0019] The material picker includes a rotary actuator and a cantilever suction head fixed on the rotary actuator. The rotary actuator can be any power component that can perform a rotary action, such as a rotary cylinder, a stepper motor, a hydraulic angle cylinder, etc. According to the use conditions of the present invention, a rotary cylinder is preferably used. The cantilever suction head is used to absorb the position of the capacitor head to transfer the capacitor. Vacuum adsorption and electromagnetic adsorption can be selected according to the material properties of the transferred capacitor. Vacuum adsorption has high reliability and has no special requirements for capacitor materials, so the present invention prefers vacuum adsorption. The front end of the cantilever suction head has a U-shaped structure with a back bend so that the suction port faces downward, which is convenient for sucking the capacitor placed horizontally at the end of the guide rail of the entire array device.

[0020] Preferably, the edge of the suction port of the cantilever suction head can be equipped with a soft material sheath or coated with a soft material to reduce surface wear on the capacitor and increase the stability of adsorption. The soft material can be rubber, TPE, polyurethane or silicone material.

[0021] The picker has two working positions: horizontal and vertical. First, the picker is rotated to a vertical position slightly inclined towards the capacitor aligning device, so that the head suction port of the cantilever suction head contacts and adsorbs the upper surface of the head of the capacitor placed at the end of the guide rail of the aligning device; then it is rotated upward to a horizontal position away from the capacitor aligning device. At this time, the pins of the capacitor adsorbed on the cantilever suction head of the picker are just vertically downward, so as to facilitate the fixing of the pin fixing clamp and the correction operation of the pin correction clamp.

[0022] The pin fixing clamp is used to fix and clamp the capacitor pins near the capacitor head, and can be a pneumatic, hydraulic or electrically driven clamp mechanism. The present invention preferably uses pneumatic clamps, and further uses pneumatic parallel clamps. Specially designed pin clamping pieces are fixed to the front ends of the clamps on both sides of the pneumatic parallel clamps, and the inner side of one side of the pin clamping piece has a protruding double V-shaped fixing notch, or it can be called a W-shaped fixing notch, and the pin clamping piece on the opposite side has a relative avoidance groove. The double V-notch is used to fix the two pins of the capacitor, and the center spacing of the two V-shaped notches is the same as the spacing of the capacitor pins to be clamped, or is slightly wider than the spacing of the capacitor pins so that the capacitor pins form an outward-inclined figure eight shape.

[0023] The pin correction clamp is used to correct the spacing of the ends of the capacitor pins to facilitate assembly in the next process. The pin correction clamp can be a pneumatic, hydraulic or electrically driven clamp mechanism. The present invention preferably uses pneumatic jaws, and further uses pneumatic finger-type clamps. The front jaw portion of the pin correction clamp is located below the jaws of the pin fixing clamp, and the pin correction clamp and the pin fixing clamp are cross-distributed at 90 degrees. A clamping jaw piece is fixed at the front end of the clamping jaw of the pin correction clamp, and the front end distance of the clamping jaw pieces on both sides is adapted to the spacing between the lower ends of the capacitor pins. Considering the rebound of the pins, the front end distance of the clamping jaw pieces should be slightly smaller than the expected spacing between the capacitor pins.

[0024] The capacitor assembly device is used to grasp and accurately insert capacitor pins into welding holes of two electrode sheets at the rear end of the micro motor, and comprises a grasping device and a pin guiding device.

[0025] The grasping device comprises a bidirectional motion mechanism and a clamping mechanism. The bidirectional motion mechanism is responsible for realizing the up and down lifting and horizontal movement of the clamping mechanism, and the clamping mechanism is responsible for grasping and releasing the capacitor.

[0026] Furthermore, the bidirectional motion mechanism includes a vertical motion component and a horizontal motion component, and the vertical motion component is installed on the slider of the horizontal motion component, so as to realize the composite motion in the vertical and horizontal directions. The vertical motion component includes a mounting bracket, a mounting slider for mounting the clamping mechanism, a guide rail and a power component for realizing reciprocating motion. The horizontal motion component includes a mounting bracket, a mounting slider for connecting and mounting the vertical motion component, a guide rail and a power component for realizing reciprocating motion.

[0027] Furthermore, the power assembly may be one of a pneumatic cylinder, an electric cylinder and a hydraulic cylinder, or may be a structure in which a motor drives a cam assembly and a connecting rod mechanism to achieve reciprocating motion. The preferred power assembly of the present invention is a pneumatic cylinder.

[0028] Furthermore, the selection of the power component for realizing the reciprocating motion in the following text is the same, and the cylinder is preferably used as the power component.

[0029] Furthermore, the guide rail can be a single square linear guide pair, two square linear guide pairs and two circular shaft guide pairs. The sliding bearings in the above guide pairs are fixed to the lower surface of the mounting slider by screws, and the guide rails in the guide pairs are fixedly connected to the mounting bracket.

[0030] Furthermore, the mounting slide block is used to connect the sliding bearing in the guide rail pair with the component to be installed, and its shape is a rectangular parallelepiped, and its material can be various metals and engineering plastics, preferably lightweight materials with low specific gravity. As for the material, the present invention preferably uses an aluminum alloy material that is light and high in strength, and has corrosion and oxidation resistance.

[0031] The clamping mechanism is used to accurately clamp the capacitor head position to transfer the capacitor, and includes a power clamp and a capacitor head clamp plate. The power clamp can be a pneumatic clamp, an electric clamp or a hydraulic clamp, and its structural form can be a parallel clamp or a finger-type clamp, or a mechanical structure equivalent to the clamp structure.

[0032] Furthermore, in the present invention, the power clamp is preferably a pneumatic parallel clamp.

[0033] Furthermore, the capacitor head clamping claw piece is divided into two structures that cooperate with each other and are respectively connected and fixed to the two sides of the power clamping claw. The end of the capacitor head clamping claw piece has a capacitor head upper end limiting structure and a capacitor pin positioning structure. The capacitor head upper end limiting structure is specifically in the form of a horizontal cantilever protrusion with a flat rectangular cross-section on the inner side of the capacitor head clamping claw piece, which is used to limit the vertical position of the capacitor head during clamping, and the inner side of the opposite side clamping claw piece has a corresponding shape of avoidance hole. The capacitor pin positioning structure is specifically in the form of a horizontal cantilever protrusion with a vertical projection shape of an isosceles triangle on the inner side of the capacitor head clamping claw piece, and the inner side of the opposite side clamping claw piece has a corresponding shape of avoidance hole. When clamping the capacitor, the triangular protrusion is inserted between the two pins to limit the horizontal position of the capacitor pin.

[0034] The pin guide device is used to guide the two pins of the capacitor to be correctly inserted into the electrode welding holes of the micro motor respectively, and includes a mounting bracket, a cylinder, a linear guide pair, a mounting slide block, and a pin guide component.

[0035] Furthermore, the pin guide assembly includes a guide plate, an electrode support plate, a motor positioning plate, a fixing bracket and a fastening screw.

[0036] The guide piece has an inverted V-shaped upper surface like a ridge and a flat bottom, with protruding square edges on both sides of the upper surface, and a guide groove extending from the top edge line to the square edges on both sides at the front end, and the guide groove ends at the protruding square edges on both sides. There is a guide slot hole with a guide opening forward at the end position of the lower end of each side of the guide groove, and the guide slot is used to guide the two pins of the capacitor to separate to both sides and pass through the guide piece downward from the open guide slot hole at the end point of the guide slot, and the opening of the guide slot hole is used for the exit action of the guide piece.

[0037] The electrode support sheet is located below the guide sheet and is in the shape of a rectangular flat sheet with sharp corners extending forward and bending downward on both sides of the front end. It is used to insert under the two electrode sheets of the motor to support them. The outer edge of the sharp corner is an extension of the side edge line of the rectangular body. The inner spacing between the two sharp corners gradually increases from the inside to the outside to facilitate guidance during insertion.

[0038] The motor positioning sheet is located below the electrode supporting sheet and is fixed on a fixing bracket, and has a fork-shaped positioning structure at the front end for positioning the horizontal position of the micro motor.

[0039] The mounting bracket has a mounting hole at one end for mounting the guide plate, the electrode support plate and the motor positioning plate, and a mounting hole at the other end for connecting and fixing with the moving slider, so that the reciprocating motion component, specifically the cylinder, can be driven to extend and position the micro motor, and the guide slot on the guide plate is aligned with the welding holes on the electrode plates on both sides of the tail of the micro motor to facilitate the insertion of the two pins of the capacitor; and after the capacitor pins are inserted, they are driven by the cylinder to withdraw backward to the initial position and disengage from the micro motor, and then the micro motor is driven by the conveyor belt of the discharge device to move the width of the micro motor to assemble the next micro motor.

[0040] The capacitor post-assembly shaping device comprises a mounting bracket, a cylinder for realizing reciprocating motion, a linear guide pair, a moving slide block and a pneumatic clamping claw.

[0041] Furthermore, the mounting bracket is used to connect and fix the capacitor post-assembly shaping device and the frame, and can be a single integral structure; or it can be a split structure, in which several brackets are combined to achieve the installation and fixation of the capacitor post-assembly shaping device and the frame, and the connection between the brackets and the frame can be fixed using bolts.

[0042] Furthermore, the guide rail can be a single square linear guide pair, two square linear guide pairs and two circular shaft guide pairs. The sliding bearings in the above guide pairs are fixed to the lower surface of the mounting slider by screws, and the guide rails in the guide pairs are fixedly connected to the mounting bracket.

[0043] Furthermore, the mounting slide block is used to connect the sliding bearing in the guide rail pair with the component to be installed, and its shape is a rectangular parallelepiped, and its material can be various metals and engineering plastics, preferably lightweight materials with low specific gravity. As for the material, the present invention preferably uses an aluminum alloy material that is light and high in strength, and has corrosion and oxidation resistance.

[0044] Furthermore, the clamping mechanism is used to press down and clamp the two electrode sheets of the micro motor that have been inserted into the capacitor pins, and includes a power clamp and an electrode shaping sheet. The power clamp can be a pneumatic clamp, an electric clamp or a hydraulic clamp, and its structural form can be a parallel clamp or a finger-type clamp, or a mechanical structure equivalent to the clamp structure.

[0045] Furthermore, in the present invention, the power clamp is preferably a pneumatic parallel clamp.

[0046] Furthermore, the electrode shaping sheet is installed on the two clamps of the power clamp by screws. The two electrode shaping sheets are symmetrical structures. The end of each electrode shaping sheet has a motor positioning fork for locating the horizontal position of the motor and an electrode shaping fork for pressing down and clamping the micro motor electrode sheet.

[0047] Furthermore, a capacitor prostrate pressing plate is fixed on the side of the pneumatic clamp body, which is used to press down the capacitor that has been shaped and fixed by the pneumatic clamp, so that the two pins of the capacitor are deformed and fall toward the micro motor body, and the capacitor is in a close and prostrate state.

[0048] The capacitor welding device includes a welding wire feeding device for feeding welding wire and accurately aligning the welding wire at the front end of the welding wire gun with the welding position of the micro motor electrode, and a welding gun control device for controlling the welding head of the welding gun to accurately align with the welding position of the micro motor electrode sheet. The two cooperate with each other to achieve spot tin welding of two electrode sheets of the micro motor that has been assembled with the capacitor.

[0049] Furthermore, the welding wire feeding device includes an automatic welding wire feeding component and a welding wire gun control component.

[0050] The automatic welding wire feeding assembly unwinds the rolled welding wire and delivers it to the outlet at the end of the welding wire gun through a feeding pipeline, and keeps the wire protruding 3-6 mm by continuous wire feeding during welding, so that the welding head of the welding gun can heat and melt and weld and fix the micro motor electrode sheet and the capacitor pin.

[0051] Furthermore, the welding wire gun is a tubular structure with a pointed conical front end. The tubular structure of the welding wire gun can be a single integral structure or a combined tubular structure. The welding wire gun is used to position and guide the end of the welding wire.

[0052] Furthermore, the welding wire gun control component controls the relative position of the welding wire gun and the micromotor electrode sheet. When welding is required, the welding wire gun and the welding gun simultaneously approach the micromotor electrode sheet and align with the welding position. After the welding of the micromotor electrode sheet and the capacitor pin is completed, the welding wire gun retreats backward from the working position under the control of the welding wire gun control component, so that the micromotor can horizontally move the occupied space of a micromotor under the drive of the conveyor belt of the discharge device to carry out the capacitor welding work of the next micromotor.

[0053] The welding gun control device comprises a welding gun component for heating and melting welding wire for welding and a welding gun control component for controlling the position of the welding gun.

[0054] Furthermore, the welding gun assembly includes two welding guns that are arranged obliquely relative to each other.

[0055] Furthermore, the welding gun control assembly includes a mounting bracket, a cylinder, a linear guide pair and a mounting slide for connecting to the frame, and the mounting slide is equipped with a welding gun three-dimensional adjustment mechanism and a welding gun fixing structure for adjusting the welding gun in three directions: up, down, left, right, front and back.

[0056] Furthermore, the mounting bracket is used to connect and fix the capacitor post-assembly shaping device and the frame, and can be a single integral structure; or it can be a split structure, in which several brackets are combined to achieve the installation and fixation of the capacitor post-assembly shaping device and the frame, and the connection between the brackets and the frame can be fixed using bolts.

[0057] Furthermore, the linear guide pair can be a single square linear guide pair, two square linear guide pairs and two round shaft guide pairs. The sliding bearings in the above guide pairs are fixed to the lower surface of the mounting slide block by screws, and the guide rails in the guide pairs are fixedly connected to the mounting bracket.

[0058] Furthermore, the three-dimensional adjustment mechanism of the welding gun includes a welding gun spacing adjustment component and a bidirectional angle adjustment component. The welding gun spacing adjustment component is composed of a mounting bracket and a linear guide pair with a tightening function. The bidirectional angle adjustment component includes a second mounting bracket mounted on the linear guide pair slider, a dual-angle adjustment connecting piece mounted on the second bracket, and a welding gun fixing structure mounted on the lower end of the dual-angle adjustment connecting piece for clamping and fixing the welding gun.

[0059] Furthermore, the dual-angle adjustment connecting piece is a right-angle bent sheet-shaped structural member with two sets of angle adjustment fixing structures, the angle adjustment fixing structure is composed of a rotation axis fixing hole and an arc-shaped through groove concentric with the rotation axis fixing hole, the arc-shaped through groove is used for angle adjustment and fixing, and two screws are respectively fixed and adjusted through the rotation axis hole and the arc-shaped through groove. Thus, the angle adjustment of the welding gun in two directions is realized, and the three-dimensional position adjustment function of the welding gun welding head is realized in cooperation with the welding gun spacing adjustment component.

[0060] The cone assembly device comprises a vibration plate, a feeding guide rail, a motor clamping and fixing assembly and a cone pressing assembly.

[0061] Furthermore, the vibration plate is used to store and arrange the gear vibrations into rows and send them to the feeding guide rail.

[0062] Furthermore, the feeding guide rail is a guide rail with a groove on the upper surface fixed between the vibration plate and the gear press assembly, and the size of the groove is adapted to the outer size of the gear to ensure that the gears are transported to the gear press assembly in a single row with head and tail connected in a tightly arranged form.

[0063] Furthermore, the motor clamping and fixing assembly is used to clamp the micro motor sent out from the end of the conveyor belt of the discharge device and synchronously move horizontally to the working position of the cone pressing assembly, so that the micro motor shaft is aligned with the cone axis in the cone pressing assembly. The motor clamping and fixing assembly includes a mounting bracket for connecting and fixing with the frame, a two-way reciprocating control mechanism installed on the mounting bracket for reciprocating movement in two directions of up and down and finished product discharge, and a pneumatic clamp fixed on the linear guide slider in the two-way reciprocating control mechanism, and the end of the pneumatic clamp has a clamp piece adapted to the shape of the micro motor.

[0064] Furthermore, the above-mentioned bidirectional reciprocating control mechanism includes a horizontal cylinder bracket installed on the mounting bracket, a horizontal linear guide pair installed on the horizontal cylinder bracket, a vertical cylinder bracket fixed on the horizontal linear guide pair slider, a vertical linear guide pair installed on the vertical cylinder bracket, a vertical cylinder installed on the vertical cylinder bracket, and a pneumatic clamp connected to the vertical cylinder and fixed on the vertical linear guide pair flower block.

[0065] Furthermore, the gear press-fitting assembly includes a press-fitting positioning block, a gear positioning cylinder and a gear press-fitting cylinder. The press-fitting positioning block fixed on the outside of the conveyor belt of the discharge device is connected to the feeding guide rail, and a gear positioning cylinder perpendicular to the feeding guide rail is arranged on one side thereof, and a gear press-fitting cylinder whose axis coincides with the axis of the micro motor to be assembled is arranged on the outside of the press-fitting positioning block. The gear positioning cylinder is used to push the gear on the end of the feeding guide rail into the gear positioning groove inside the press-fitting positioning block, and then the cylinder rod of the gear press-fitting cylinder extends into the press-fitting positioning block to press the gear toward the micro motor shaft. When the pressing action of the gear press-fitting cylinder is completed, the gear press-fitting assembly work is completed.

[0066] With the progress of all the above processes, the assembly of the 104 capacitor and the gear on the micro motor is completed, and the finished product is sent from the finished product feeding device to the unloading workbench for subsequent packaging. The outer side of the unloading workbench has an upwardly protruding limit flange to prevent the micro motor from slipping and keep the micro motors neatly arranged.

[0067] In summary, the present invention has the following beneficial technical effects:

[0068] 1. It fully realizes the programmed automatic assembly of the assembly welding of the external 104 capacitor and the press-in assembly of the gear, replacing the traditional manual or semi-manual assembly, greatly reducing the cost of manpower and solving the problem of high assembly production cost.

[0069] 2. The assembly and welding of the external 104 capacitor and the press-fit assembly of the gear are fully automatic on one device. Each process takes less time and multiple processes are carried out simultaneously, which improves production efficiency.

[0070] 3. All the assembly and welding processes of the external 104 capacitor are completed automatically, completely avoiding the interference of human factors, and the capacitor welding quality is more high-quality and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a structural stereoscopic schematic diagram of an embodiment of the automatic assembly machine of the present invention.

[0072] Figure 2 It is an embodiment Figure 1 The three-dimensional schematic diagram of the automatic assembly machine shown is horizontally rotated 90 degrees.

[0073] Figure 3 It is a schematic diagram of the structure of a capacitor array device in an embodiment of the present invention.

[0074] Figure 4 It is a schematic structural stereogram of a pin correction device in an embodiment of the present invention.

[0075] Figure 5It is a structural stereoscopic schematic diagram of a pin correction device and a capacitor arranging device in an embodiment of the present invention.

[0076] Figure 6 It is a structural stereoscopic schematic diagram of a pin correction device and a capacitor assembly device in an embodiment of the present invention.

[0077] Figure 7 It is a partial three-dimensional schematic diagram of the structure of the clamping mechanism of the capacitor assembly device in an embodiment of the present invention.

[0078] Figure 8 It is a partial three-dimensional schematic diagram of the structure of the pin guide device of the capacitor assembly device in an embodiment of the present invention.

[0079] Fig. 9 It is a schematic structural stereoscopic diagram of a capacitor assembly shaping device in an embodiment of the present invention.

[0080] Fig.10 It is a schematic structural stereogram of a gear assembly device in an embodiment of the present invention.

[0081] In the figure: 1. control host, 2. frame, 3. feeding workbench, 4. discharging workbench, 5. feeding device, 6. capacitor arranging device, 7. pin correction device, 8. capacitor assembly post-shaping device, 10. capacitor welding device, 11. gear assembly device, 12. discharging device, 21. main frame, 22. first auxiliary frame, 23. second auxiliary frame, 61. vibration plate, 62. arranging guide rail, 63. receiving plate, 71. material picker, 72. pin fixing clamp, 73. pin correction clamp, 81. grabbing device, 82. pin guiding device, 91. third mounting bracket, 92. third air Cylinder, 93. Third linear guide pair, 94. Third mounting slide, 95. Pneumatic clamp, 101. Welding gun control device, 102. Wire feeding device, 114. Vibrating plate, 113. Feeding guide rail, 111. Motor clamping and fixing assembly, 112. Gear press assembly, 621. Connecting section, 622. Inner drop screening section, 623. Outer drop screening section, 624. Narrow track screening section, 625. Limiting strip, 626. Optical sensor, 627. Oriented magnetic strip, 711. Rotating cylinder, 712. Cantilever suction head, 721. Pneumatic parallel clamp, 722. Pin clamping claw, 731. Pneumatic finger clamp Pliers, 732. Correction clamping claws, 811. Horizontal motion assembly, 812. Vertical motion assembly, 813. Clamping claw mechanism, 821. Pin guide assembly, 822. Mounting slide, 823. Second mounting bracket, 824. Second linear guide pair, 825. Second cylinder, 951. Electrode shaping sheet, 1121. Press-fit positioning block, 1123. Gear press-fit cylinder, 1122. Gear positioning cylinder, 6241. Guide rail bottom edge, 7221. Double V-shaped fixing notch, 7222. Avoidance groove, 8111. Horizontal mounting bracket, 8112. First linear guide pair, 8113. First cylinder Cylinder, 8121. Vertical mounting bracket, 8122. Clamping jaw mounting slider, 8123. Linear slide pair, 8124. Fourth cylinder, 8131. Power clamping jaw, 8132. Capacitor head clamping jaw piece, 8211. Guide piece, 8212. Electrode support piece, 8213. Motor positioning piece, 8214. Fixed bracket, 8215. Pad, 8216. Fastening screw, 9511. Motor positioning fork, 9512. Electrode shaping fork, 81321. Capacitor head upper end limit structure, 81322. Capacitor pin positioning structure, 82111. Guide groove, 82112. Guide slot hole, DETAILED DESCRIPTION

[0082] In order to clearly and specifically illustrate the technical solution of the present invention, it is further described below with reference to the accompanying drawings and specific embodiments.

[0083] like Figure 1 and Figure 2As shown, the automatic assembly machine is a fully automatic assembly device for micro motor 104 capacitor and gear, which includes a control host 1, a frame 2, a feeding workbench 3, a discharging workbench 4, a feeding device 5, a capacitor arranging device 6, a pin correction device 7, a capacitor assembly device 8, a capacitor post-assembly shaping device 9, a capacitor welding device 10, a gear assembly device 11 and a discharging device 12.

[0084] The capacitor 104 is referred to as capacitor hereinafter.

[0085] The control host 1 is used to control the coordination and execution of the feeding device 5, the capacitor arranging device 6, the pin correction device 7, the capacitor assembly device 8, the capacitor post-assembly shaping device 9, the capacitor welding device 10, the gear assembly device 11 and the discharging device 12. The control host is fixedly installed on the upper part of the automatic assembly machine, and is suitable for the operator to monitor the operation within the height range of the line of sight.

[0086] The frame 2 is used to fix and install the remaining components of the automatic assembly machine. It is a box-type structure, divided into a main frame 21, a first auxiliary frame 22 and a second auxiliary frame 23. The split frame is convenient for assembly and transportation and position adjustment between components.

[0087] The feeding workbench 3 is installed on the frame 2 at the feeding end of the automatic assembly machine, and is used to place and arrange the semi-finished micro motors to be fed into the automatic assembly machine.

[0088] The feeding device 5 is arranged in parallel with the feeding workbench 3 and installed on the frame 2. The micro motor semi-finished products arranged in rows on the feeding workbench 3 are pushed onto the conveyor belt of the feeding device 5, and finally the micro motor semi-finished products are sent to the discharging device 12.

[0089] The discharging device 12 and the feeding device 5 are arranged horizontally and side by side, and there is an overlapped area in the middle of the two. Both of them have conveyor belts adapted to the size of the motor, and the head and tail of the micro motor can be limited in the width direction so that the micro motors are neatly arranged on the conveyor belt. A micro motor pushing device is arranged on the side of the end of the conveyor belt of the feeding device, which can push the micro motors neatly and closely arranged on the conveyor belt of the feeding device into the conveyor belt of the discharging device 12 according to the instructions of the control host, and then enter the subsequent working positions in turn to assemble the capacitor and the gear, and finally transport the assembled micro motors to the discharging workbench 4 position for sorting and packaging into boxes.

[0090] like Figure 3 As shown, the capacitor aligning device 6 is located on one side of the discharging device 12 and is fixed to the frame 2 , and includes a vibration plate 61 , an aligning guide rail 62 and a receiving plate 63 .

[0091] Furthermore, the vibration plate 61 is used to store the capacitors to be assembled and to send the capacitors out of the vibration plate 61 along the internal spiral ascending track through vibration. The vibration plate 61 can arrange the capacitors into a continuous row and send them out of the vibration plate continuously or intermittently, but because the capacitor has two pins, the vibration plate 61 cannot make the orientation of the capacitor pins consistent.

[0092] Furthermore, the entire guide rail 62 is used to filter the capacitor sequence sent out by the vibration disk into a sequence with consistent head and tail directions. It is installed on the upper edge of the vibration disk 61, and its appearance is an open annular V-shaped groove structure. The bottom of the groove in the starting area and the middle area of ​​the entire guide rail 62 is lower than the inner and outer side edges, and the bottom of the groove in the end area is flush with one side edge. According to different functions, it is divided into four areas: a connecting section 621, an inner falling screening section 622, an outer falling screening section 623 and a narrow track screening section 624, and also includes a limit strip 625, a light sensor 626 and a directional magnetic strip 627.

[0093] Furthermore, the connecting section 621 is used to receive the capacitors sent out by the vibration plate 61, and the edges on both sides of the V-shaped groove are complete and smoothly transitioned to the discharge port of the vibration plate; the inner falling screening section 622 is connected to the aforementioned connecting section 621, and the width of the inner edge of the V-shaped groove is gradually narrowed, so that the capacitors that cannot be arranged in a row at the bottom of the V-shaped groove and are accumulated on the inner edge of the entire row of guide rails 62 fall from the inside to the receiving plate 63;

[0094] Furthermore, the outer screening section 623 is connected to the aforementioned inner screening section 622, and the outer edge of its V-groove suddenly narrows, so that the capacitors that cannot be arranged in a row at the bottom of the V-groove of the entire guide rail 62 and are accumulated on the outer edge of the entire guide rail 62 fall from the outside to the receiving tray 63; through the joint action of the inner screening section 622 and the outer screening section 623, the capacitors form a single queue arrangement on the entire guide rail 62.

[0095] Furthermore, the narrow-track screening section 624 is connected to the aforementioned outer-falling screening section 623, and its V-shaped groove gradually deforms into an inner edge with a vertical arrangement, and the outer edge gradually becomes a horizontally arranged arc-shaped guide rail. The width of the outer side of the guide rail or the guide rail bottom edge 6241 is 1.5-2 times the width of the capacitor head, so that the capacitor with its head facing outward can fall into the receiving tray 63. The inner side of the guide rail of the narrow-track screening section 624 has a directional magnetic strip 627, which has an attraction effect on the capacitor head, so that the capacitor head can be directed toward the inner side of the vibration disk 61. There is a limit strip 625 above the middle of the narrow-track screening section 624, so that the capacitor standing upright can move along the guide rail and hit the limit strip 625 and fall horizontally on the guide rail bottom edge 6241 or fall from the outside into the receiving tray 63. The function of the narrow track screening section 624 is to further screen and arrange the capacitors that have formed a single queue into a sequence arranged in the same direction with the heads facing inward and the pins facing outward. A light sensor 626 is provided at the end position of the narrow track screening section 624. When the capacitors are arranged at the end of the entire guide rail 62, the vibration disk 61 stops working to prevent the capacitors from piling up and falling before being removed by the next process.

[0096] like Figure 4 and Figure 5 As shown, the pin correction device 7 includes a material picker 71, a pin fixing clamp 72 and a pin correction clamp 73, and its function is to transfer the capacitors arranged at the end of the guide rail of the capacitor arranging device 6 and correct the two pins of the capacitors so that the distance between the two pins of the capacitors is consistent and suitable for the use requirements of the next process.

[0097] Furthermore, the material picker 71 includes a rotary actuator 711 and a cantilever suction head 712 fixed on the rotary actuator 711. The rotary actuator 711 preferably uses a rotary cylinder for the use conditions of the present invention. The cantilever suction head 712 is used to suck the capacitor head position to transfer the capacitor. The present invention preferably uses negative pressure air adsorption, and the air pipe connected to the negative pressure generating device is omitted in the figure. The front end of the cantilever suction head has a U-shaped structure with a reverse bend so that the suction port faces downward, which is convenient for sucking the capacitor placed horizontally at the end of the guide rail of the entire array device.

[0098] Furthermore, the edge of the suction port of the cantilever suction head can be equipped with a soft material sheath or coated with a soft material to reduce surface wear on the capacitor and increase the stability of adsorption. The soft material can be rubber, TPE, polyurethane or silicone material.

[0099] like Figure 4 and Figure 5As shown, the picker 71 has two working positions, horizontal and vertical. First, the picker 71 is rotated to a vertical position slightly inclined to the capacitor aligning device 6, so that the head suction port of the cantilever suction head 712 contacts the upper surface of the head of the capacitor placed at the end of the guide rail of the aligning device 6 and is adsorbed; then it is rotated away from the capacitor aligning device 6 and upward to a horizontal position. At this time, the pins of the capacitor adsorbed on the cantilever suction head 712 of the picker 71 are just vertically downward, so as to facilitate the fixing of the pin fixing clamp 72 and the correction operation of the pin correction clamp 73.

[0100] like Figure 4 As shown, the pin fixing clamp 72 is used to fix and clamp the capacitor pins near the capacitor head. In this embodiment, pneumatic clamps are preferred, and pneumatic parallel clamps 721 are further selected. A pair of specially designed pin clamping claws 722 are fixed at the front ends of the clamps on both sides of the pneumatic parallel clamps 721, wherein the inner side of one clamping claw has a protruding double V-shaped fixing notch 7221, and the fixing notch 7221 can also be called W-shaped, and the opposite clamping claw has a relative avoidance groove 7222. The double V-shaped fixing notch 7221 is used to fix the two pins of the capacitor, and the center spacing of the two V-shaped notches is the same as the spacing of the capacitor pins to be clamped, or slightly wider than the spacing of the capacitor pins so that the capacitor pins form an outward-inclined figure eight shape.

[0101] like Figure 4 or Figure 5 As shown, the pin correction clamp 73 is used to correct the spacing of the ends of the capacitor pins to facilitate assembly in the next process. The pin correction clamp 73 can be a pneumatic, hydraulic or electrically driven clamp mechanism. The present invention preferably uses pneumatic jaws, and further uses pneumatic finger-type clamps 731. The front jaw portion of the pin correction clamp 73 is located below the jaws of the pin fixing clamp, and the pin correction clamp and the pin fixing clamp are cross-distributed at 90 degrees. A pair of correction jaw pieces 732 are fixed to the front end of the jaws of the pneumatic finger-type clamp 731. The front end distance of the jaw pieces on both sides is adapted to the spacing of the lower ends of the capacitor pins. Considering the rebound of the pins, the front end distance of the jaw pieces should be slightly smaller than the expected spacing of the capacitor pins.

[0102] like Figure 6 As shown, the capacitor assembly device 8 is used to grasp and accurately insert the capacitor pins into the welding holes of the two electrode sheets at the rear end of the micro motor, and includes a grasping device 81 and a pin guiding device 82.

[0103] Furthermore, the grasping device 81 includes a horizontal motion component 811, a vertical motion component 812 and a clamping mechanism 813. The horizontal motion component 811 and the vertical motion component 812 are responsible for realizing the up and down lifting and horizontal movement of the clamping mechanism 813, and the clamping mechanism 813 is responsible for grasping and releasing the capacitor.

[0104] Furthermore, the vertical motion assembly 812 is mounted on the sliding bearing of the horizontal motion assembly 811, thereby realizing the composite motion in the vertical and horizontal directions. The vertical motion assembly 812 includes a vertical mounting bracket 8121, a clamping jaw mounting slide block 8122 for mounting the clamping jaw mechanism 813, a linear guide rail pair 8123 for guiding, and a fourth cylinder 8124 for realizing reciprocating motion. The horizontal motion assembly 811 includes a horizontal mounting bracket 8111, a first linear guide rail pair 8112 for guiding, and a first cylinder 8113 for realizing reciprocating motion.

[0105] like Figure 7 As shown, the clamping mechanism 813 is used to accurately clamp the capacitor head position to transfer the capacitor, and includes a power clamp 8131 and a capacitor head clamping piece 8132. Preferably, the power clamp 8131 is a pneumatic parallel clamp.

[0106] Furthermore, the capacitor head clamping claw piece 8132 is divided into two structures that cooperate with each other, and are respectively connected and fixed to the two sides of the power clamp 8131. The end of the capacitor head clamping claw piece 8132 has a capacitor head upper end limiting structure 81321 and a capacitor pin positioning structure 81322. The capacitor head upper end limiting structure 81321 is specifically in the form of a horizontal cantilever protrusion with a flat rectangular cross-section on the inner side of the capacitor head clamping claw piece, which is used to limit the vertical position of the capacitor head during clamping, and the inner side of the opposite side clamping claw piece has a corresponding shape of avoidance hole. The capacitor pin positioning structure 81322 is specifically in the form of a horizontal cantilever protrusion with a vertical projection shape of an isosceles triangle on the inner side of the capacitor head clamping claw piece, and the inner side of the opposite side clamping claw piece has a corresponding shape of avoidance hole. When clamping the capacitor, the triangular protrusion is inserted between the two pins to limit the horizontal position of the capacitor pin.

[0107] like Figure 7 As shown, the pin guide device 82 is used to guide the two pins of the capacitor to be correctly inserted into the electrode welding holes of the micro motor, and includes a second mounting bracket 823, a second cylinder 825, a second linear guide pair 824, a mounting slider 822 and a pin guide assembly 821.

[0108] like Figure 8 As shown, the pin guide assembly 821 includes a guide plate 8211, an electrode support plate 8212, a motor positioning plate 8213, a fixing bracket 8214, a pad 8215 and a fastening screw 8216.

[0109] Furthermore, the guide piece 8211 has an inverted V-shaped upper surface like a ridge and a flat bottom, with protruding square edges on both sides of the upper surface, and a guide groove 82111 extending from the top edge line to the square edges on both sides at the front end, and the guide groove ends at the protruding square edges on both sides. There is a guide slot hole 82112 with a guide opening forward at the end position of the lower end of each side of the guide groove. The guide groove 82111 is used to guide the two pins of the capacitor to separate to both sides and pass downward through the guide piece from the guide slot hole 82112 opened at the end point of the guide groove, and the opening of the guide slot hole 82112 is used for the exit action of the guide piece.

[0110] Furthermore, the electrode support sheet 8212 is located below the guide sheet 8211 and is shaped like a rectangular flat sheet with sharp corners extending forward and bending downward on both sides of the front end, which is used to insert under the two electrode sheets of the motor to support them. The outer edge of the sharp corner is an extension of the side edge line of the rectangular body, and the inner spacing between the two sharp corners gradually increases from the inside to the outside to facilitate guidance during insertion.

[0111] Furthermore, the motor positioning piece 8213 is located below the electrode supporting piece 8212 and is fixed on the fixing bracket 8214 with a pad 8215 therebetween. The front end of the motor positioning piece 8213 has a fork-shaped positioning structure for locating the horizontal position of the micro motor.

[0112] Furthermore, the fixed bracket 8214 has a mounting hole at one end for mounting the guide plate 8211, the electrode support plate 8212, the pad 8215 and the motor positioning plate 8213, and a mounting hole at the other end for connecting and fixing with the mounting slider 822, so that the micro motor can be extended and positioned forward by the second cylinder 825, and at the same time, the guide slot 82112 on the guide plate 8211 is aligned with the welding holes on the electrode plates on both sides of the tail of the micro motor to facilitate the insertion of the two pins of the capacitor; and after the capacitor pins are inserted, they are driven by the second cylinder 825 to withdraw backward to the initial position and disengage from the micro motor, and then the micro motor moves by the width of the micro motor under the drive of the conveyor belt of the discharge device 12 to assemble the next micro motor.

[0113] like Fig. 9 As shown, the capacitor post-assembly shaping device 9 includes a third mounting bracket 91, a third cylinder 92 for realizing reciprocating motion, a third linear guide pair 93, a third mounting slide block 94 and a pneumatic clamp 95.

[0114] Furthermore, the third mounting bracket 91 is used to connect and fix the capacitor post-assembly shaping device 9 .

[0115] Furthermore, the third linear guide pair 93 includes two sets of square linear guide pairs, the sliding bearings in the guide pairs are fixed to the lower surface of the third mounting slide block 94 by screws, and the guide rails in the third linear guide pair 93 are fixedly connected to the third mounting bracket 91.

[0116] Furthermore, the third mounting slide block 94 is used to connect the sliding bearing in the third linear guide pair 93 and the pneumatic clamp 95 .

[0117] Furthermore, the pneumatic clamp 95 is used to press down and clamp the two electrode sheets of the micro motor that have been inserted into the capacitor pins. In this embodiment, pneumatic parallel clamps are preferred.

[0118] Furthermore, the electrode shaping sheet 951 is installed on the two clamps of the pneumatic clamp 95 by screws. The electrode shaping sheet 951 is a two-piece symmetrical structure. The end of each electrode shaping sheet has a motor positioning fork 9511 for positioning the horizontal position of the motor and an electrode shaping fork 9512 for pressing down and clamping the micro motor electrode sheet.

[0119] Furthermore, a capacitor prostrate pressing piece 952 is fixed on the side of the pneumatic clamp 95 body, which is used to press down the capacitor that has been shaped and fixed by the pneumatic clamp, so that the two pins of the capacitor are deformed and fall toward the micro motor body, and the capacitor is in a close and prostrate state.

[0120] like Figure 1 As shown, the capacitor welding device 10 includes a welding wire feeding device 102 for feeding the welding wire and accurately aligning the welding wire at the front end of the welding wire gun with the welding position of the micro motor electrode, and a welding gun control device 101 for controlling the welding gun welding head to accurately align the welding position of the micro motor electrode sheet, and the two cooperate with each other to realize spot tin welding of the two electrode sheets of the micro motor that has been assembled with the capacitor.

[0121] Since the capacitor welding device 10 has been described in detail above and all components are purchased, it will not be described in detail again.

[0122] like Figure 2 and Fig.10 As shown, the gear assembly device 11 includes a vibration plate 114, a feeding guide rail 113, a motor clamping and fixing assembly 111 and a gear press assembly 112. The gear press assembly 112 includes a press positioning block 1121, a gear press cylinder 1123 and a gear positioning cylinder 1122.

[0123] Since the gear assembly device 11 has been described in detail above and its structure is not very innovative, it will not be described in detail again.

[0124] The structure of this embodiment has been described so far. The working process of the micro motor external 104 capacitor and the gear automatic assembly machine provided by the embodiment of the present invention will be described in detail as follows.

[0125] The automatic assembly machine is started, and the micromotors arranged on the feeding workbench 3 are placed on the conveyor belt of the feeding device 5 in sequence. When the closely arranged micromotors move to the end of the conveyor belt of the feeding device 5, a micromotor pushing device is provided on the side of the end of the conveyor belt of the feeding device 5. The micromotors that have been neatly and closely arranged on the conveyor belt of the feeding device can be pushed into the conveyor belt of the discharging device 12 according to the instructions of the control host, and then enter the subsequent working positions in sequence to assemble, shape, weld and assemble the gears of the capacitors, and finally convey the assembled micromotors to the discharging workbench position.

[0126] At the same time, the capacitors placed in the vibration plate 61 of the capacitor aligning device 6 are sent out of the vibration plate 61 along the spiral upward track inside the vibration plate 61 under the action of vibration, enter the connecting section 621 of the aligning guide rail 62, and then enter the inner screening section 622, so that the capacitors that cannot be arranged in a row at the bottom of the V-shaped groove of the aligning guide rail 62 and are accumulated on the inner edge of the aligning guide rail fall from the inside into the receiving tray 63.

[0127] The capacitors continue to enter the outer screening section 623 of the entire row of guide rails 62 under the action of vibration, and the outer edge of the V-groove suddenly narrows, causing the capacitors that cannot be arranged in a row at the bottom of the V-groove of the entire row of guide rails 62 and are accumulated on the outer edge of the entire row of guide rails 62 to fall from the outside into the receiving tray 63.

[0128] The capacitor continues to enter the narrow-track screening section 624 of the entire guide rail 62 under the action of vibration, so that the capacitor with its head facing outward can fall into the receiving tray. The inner edge of the guide rail contains a strip-shaped directional magnetic strip 627, which has an attraction effect on the capacitor head, so that the capacitor head can face the inner side of the vibration disk 61. There is a limit strip 625 above the middle of the narrow-track screening section 624, which can make the capacitor standing up move along the guide rail and hit the limit strip and fall horizontally on the bottom edge of the guide rail or fall from the outside into the receiving tray 63. The function of the narrow-track screening section 624 is to further screen and arrange the capacitors that have formed a single queue into a sequence with the head facing inward and the pins facing outward in the same direction. A light sensor 626 is provided at the end of the narrow-track screening section. When a capacitor is arranged at the end of the entire guide rail 62, the vibration disk 61 stops working to prevent the capacitor from being piled up and falling before being taken away by the next process.

[0129] The cantilever suction head 712 of the material picker 71 of the pin correction device 7 is driven by the rotary cylinder 711 to rotate to the position as shown in FIG. Figure 5 The capacitor at the end of the entire guide rail is adsorbed, and then the rotary cylinder 711 is rotated to the position shown in FIG. Figure 4The capacitor is placed in the position shown in FIG. 1 and placed in the pin clamping claw piece 722 of the pin fixing clamp 72. The pin clamping claw piece 722 is closed, and the two pins of the capacitor are fixed by the fixing notches 7221 respectively. The cantilever suction head 712 returns to the position shown in FIG. Figure 5 At the same time, the front end correction jaw piece 732 of the correction clamp 73 is pressed against the capacitor pin to complete the distance correction of the two pins of the capacitor.

[0130] Then, the clamping mechanism 813 of the grasping device 81 of the capacitor assembly device 8, under the coordinated movement of the horizontal motion component 811 and the vertical motion component 812, clamps the capacitor with the pin correction completed in the pin clamping piece 722 of the pin fixing clamp 72 and transfers it to above a micro motor on the conveyor belt of the discharge device 12. At the same time, the pin guide component 821 at the front end of the pin guide device 82 moves to the top of the micro motor under the push of the second cylinder 825, the front end positioning fork of the motor positioning piece 8213 limits the horizontal position of the micro motor to the left and right, the electrode support piece 8212 is inserted under the two electrode pieces of the micro motor to support it, the guide slot 82112 of the guide piece 8211 is aligned with the welding holes on the two electrode pieces of the micro motor, and then the clamping mechanism 813 inserts the capacitor downward, and when the two pins of the capacitor contact the guide piece 8211, the capacitor pins are separated to both sides under the guiding action of the guide groove 82111, and slide downward along the groove 82111 into the guide slots 82112 on both sides, continue to pass downward through the guide piece into the welding holes of the electrode piece of the micro motor, and then the pin guide component 821 at the front end of the pin guide device 82 moves to the initial position under the pull of the second cylinder 825, the capacitor pins withdraw from the opening in front of the guide slot 82112, and break contact with the micro motor, and the insertion and assembly of the capacitor on the micro motor is accurately completed.

[0131] The micro motor with the capacitor inserted is moved to the next process position under the drive of the conveyor belt of the discharge device 12.

[0132] Driven by the third cylinder 92 of the capacitor post-assembly shaping device 9, the pneumatic clamp 95 moves downward, and the electrode shaping sheets 951 installed on the two clamps of the pneumatic clamp 95 contact the micro motor below. While the motor positioning fork 9511 fixes the horizontal position of the micro motor, the electrode shaping fork 9512 presses down and clamps the electrode sheet of the micro motor, so that the two capacitor pins that have been inserted into the two electrode welding holes of the micro motor are deformed inward. The purpose is to make the position of the capacitor more stable before the welding process and the capacitor pins are retracted inward after welding, so as to avoid the change of the capacitor position during welding affecting the welding quality.

[0133] While the pneumatic clamp 95 moves downward to shape the capacitor pins, the capacitor inversion pressing piece 952 installed on the side of the pneumatic clamp 95 body presses down the capacitor that has been shaped and fixed by the pneumatic clamp, so that the two pins of the capacitor are deformed and inverted toward the micro motor body. The capacitor is in a tightly inverted state, which facilitates the welding operation of the welding gun and welding wire during welding.

[0134] After the capacitor is assembled and shaped, the micro motor continues to move to the welding process position under the drive of the conveyor belt of the discharge device 12.

[0135] The welding wire feeding device 102 of the capacitor welding device 10 feeds the welding wire and accurately aligns the welding wire at the front end of the welding wire gun with the welding position of the micromotor electrode. The welding gun control device 101 controls the welding head of the welding gun to accurately align with the welding position of the micromotor electrode sheet to melt the welding wire. The melted welding wire material is adsorbed on the electrode sheet and the capacitor pin at the welding holes of the two electrode sheets of the micromotor to form welding points. The welding gun and the welding wire retreat to the initial position and break contact with the micromotor. The welding point cools and solidifies, completing the welding of the two electrode sheets of the micromotor that has been assembled with the capacitor.

[0136] The micro motor that has completed capacitor welding continues to move to the position of the gear assembly process under the drive of the conveyor belt of the discharge device 12.

[0137] The motor clamping and fixing assembly 111 clamps the micro motor sent out from the end of the conveyor belt of the discharging device and synchronously moves horizontally to the working position of the gear pressing assembly 113, so that the motor shaft of the micro motor is aligned with the gear axis in the gear pressing assembly.

[0138] The vibration plate 114 in the gear assembly device 11 vibrates the gears stored inside to arrange them into rows and send them to the feeding guide 113. Under the action of vibration, the gears connected head to tail enter the press-fitting positioning block 1121 of the gear press-fitting assembly 112. The gear positioning cylinder 1122 pushes the gear on the end of the feeding guide 113 into the positioning groove inside the press-fitting positioning block 1121 (not shown in the figure), and then the gear press-fitting cylinder 1123 extends into the cylinder rod inside the press-fitting positioning block 1121 to press the gear toward the micro-motor shaft. When the pressing action of the gear press-fitting cylinder 1123 is completed, the gear press-fitting assembly work is completed.

[0139] The micro motors after the gear assembly are pushed horizontally by the motor clamping and fixing assembly 111, and the micro motors are closely connected and pushed to the unloading workbench 4 in sequence. The micro motors are loaded into trays and boxes on the unloading workbench.

[0140] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A micro motor automatic assembly machine, characterized in that It includes a frame, a control host, a feeding device, a capacitor arranging device, a pin correction device, a capacitor assembly device, a capacitor welding device, a gear assembly device and a discharging device. The frame is used to fix and install the remaining components of the automatic assembly machine, and is a frame-type structure or a box-type structure, and is a single whole or divided into a main frame and an auxiliary frame; The control host is fixedly mounted on the upper part of the frame, and is used to receive signals provided by the sensor and control and coordinate the execution of the feeding device, the capacitor arranging device, the pin correction device, the capacitor assembly device, the capacitor welding device, the gear assembly device and the discharging device through a program; The feeding device is installed at one end of the frame feeding, and is used to feed the micro motor semi-finished product into the micro motor automatic assembly machine and transfer it to the discharging device; The discharging device is installed on the frame, parallel to the feeding device and partially overlapped with the feeding device so as to receive the semi-finished micro motor delivered by the feeding device for conveying the micro motor in subsequent processes; The capacitor arranging device is installed on the frame outside the discharging device, and is used to arrange the capacitors in a row with the head and tail directions consistent and closely arranged; The pin correction device is located between the discharging device and the capacitor arranging device and is connected and fixed to the frame, and is used to transfer the capacitors arranged at the end of the guide rail of the capacitor arranging device and correct the spacing between the two pins of the capacitor; The capacitor assembly device is fixedly connected to the frame and is used to grab the capacitor from the pin correction device and accurately insert the capacitor pins into the welding holes of the two electrode sheets at the rear end of the micro motor; The capacitor welding device is fixedly connected to the frame and is used to spot tin welding two electrode sheets of the micro motor that has been equipped with a capacitor; The gear assembly device is fixedly connected to the frame and is used to arrange the gears into rows and press the gears onto the micro motor shaft; The capacitor arranging device comprises a vibration plate and an arranging guide rail, wherein the vibration plate is used to store capacitors to be assembled and arrange the capacitors into rows by vibration and continuously or intermittently send them out of the vibration plate, and the arranging guide rail is used to screen the capacitors arranged into rows by the vibration plate so that the capacitors have the same head and tail directions and are continuously arranged to the end of the arranging guide rail; The entire row of guide rails is installed on the upper edge of the vibration plate, and has an open annular V-shaped groove structure, which is divided into a connecting section, an inner drop screening section, an outer drop screening section and a narrow track screening section; The limit strip at the upper middle of the narrow rail screening section can make the capacitor erected upward move along the guide rail and hit the limit strip, so that it falls horizontally to the bottom edge of the guide rail or falls from the outside into the receiving tray; The pin correction device includes a material picker, a pin fixing clamp and a pin correction clamp; The front ends of the clamps on both sides of the pin fixing clamp are fixed with pin clamping claw pieces, wherein the inner side of one pin clamping claw piece has a protruding double V-shaped fixing notch, and the pin clamping claw piece on the opposite side has a relative avoidance groove, the double V-notch is used to fix the two pins of the capacitor, and the center spacing of the two V-shaped notches is the same as the spacing of the capacitor pins to be clamped, or slightly wider than the spacing of the capacitor pins so that the capacitor pins form an outward-inclined figure eight shape; The capacitor assembly device includes a grasping device and a pin guiding device; The grasping device has a capacitor head clamping claw piece, which is divided into two structures that cooperate with each other and are respectively connected and fixed to the two sides of the power clamping claw pliers. The end of the capacitor head clamping claw piece has a capacitor head upper end limiting structure and a capacitor pin positioning structure. The capacitor head upper end limiting structure is specifically in the form of a horizontal cantilever protrusion with a flat rectangular cross-section on the inner side of the capacitor head clamping claw piece, which is used to limit the vertical position of the capacitor head during clamping, and the inner side of the opposite side clamping claw piece has a corresponding shape of avoidance hole; the capacitor pin positioning structure is specifically in the form of a horizontal cantilever protrusion with a vertical projection shape of an isosceles triangle on the inner side of the capacitor head clamping claw piece, and the inner side of the opposite side clamping claw piece has a corresponding shape of avoidance hole. When clamping the capacitor, the triangular protrusion is inserted between the two pins to limit the horizontal position of the capacitor pin; The pin guiding device comprises a mounting bracket, a cylinder, a linear guide pair, a mounting slide block and a pin guiding assembly.

2. A micro motor automatic assembly machine as claimed in claim 1, characterized in that The invention also comprises a capacitor post-assembly shaping device for pressing down, clamping and shaping the electrode sheet of the micro-motor and pressing down the capacitor to lie flat.

3. A micro motor automatic assembly machine as claimed in claim 1, characterized in that It also includes a feeding workbench for feeding arrangement and a discharging workbench for discharging arrangement. The feeding workbench is fixed to the frame and located at the feeding end of the micro motor automatic assembly machine, and the discharging workbench is fixed to the frame and located at the discharging end of the micro motor automatic assembly machine.

4. A micro motor automatic assembly machine as claimed in claim 1, characterized in that A light sensor is provided at the end position of the narrow rail screening section, and the vibration plate stops working when the capacitor is arranged at the end of the entire row of guide rails.

5. A micro motor automatic assembly machine as claimed in claim 1, characterized in that The width of the bottom edge of the guide rail of the narrow rail screening section is 1.5-2 times the width of the capacitor head, so that the capacitor with the head facing outward can fall into the receiving tray.

6. A micro motor automatic assembly machine as claimed in claim 1, characterized in that The inner edge of the narrow-track screening section guide rail contains a strip permanent magnet, which has an attraction effect on the capacitor head and can make the capacitor head face the inner side of the vibration plate.

7. A micro motor automatic assembly machine as claimed in claim 1, characterized in that The pin guide assembly comprises a guide piece, an electrode support piece, a motor positioning piece, a fixing bracket and a fastening screw.

8. A micro motor automatic assembly machine as claimed in claim 2, characterized in that The capacitor post-assembly shaping device has an electrode shaping sheet installed on two clamps of a power clamp, the two electrode shaping sheets are symmetrical structures, and the end of each electrode shaping sheet has a motor positioning fork for locating the horizontal position of the motor and an electrode shaping fork for pressing down and clamping the micro motor electrode sheet for shaping.

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