Motor assembly equipment and automobile motor assembly method capable of automatically screwing

Abstract

The invention discloses motor assembling equipment and an automobile motor assembling method capable of automatically screwing, and relates to the field of motor assembly.The motor assembling equipment comprises a feeding module and a screwing module, the screwing module comprises a mounting plate and a plurality of screwing assemblies, the screwing assemblies are all mounted on the mounting plate, and the screwing assemblies can vertically move; the screwing assembly comprises a screwing head, a screwing bit and a transmission rod, the transmission rod can drive the screwing bit to rotate, the feeding module can convey a screw into the screwing head, and after the screwing head descends to abut against a workpiece, the transmission rod descends and rotates in the screwing head. The position of the mounting block can be adjusted on the plane of the mounting plate, so that the flexibility of the equipment is greatly enhanced, the equipment can adapt to the change of screw hole spacing on workpieces with different specifications, the connecting rod is connected with the transmission rod through the universal joint, and even if the position of the transmission rod is changed due to the movement of the screwing head, the transmission rod can be fixed. And the rotating power can still be effectively transmitted to the transmission rod, so that the screwing function is ensured to be realized.

Description

Technical Field

[0001] This invention relates to the field of motor assembly, and in particular to a motor assembly device and an automatic screw-on method for assembling automotive motors. Background Technology

[0002] Automotive motors refer to electric motor systems used in various types of automobiles, whose core function is to convert electrical energy into mechanical energy. With the advancement of automotive electrification, automotive motors have become a core component of modern automobiles (especially new energy vehicles), and are mainly divided into two categories: drive motors and auxiliary motors.

[0003] In the manufacturing of automotive motors, a large number of assembly equipment are used to assemble and fix various parts. Among them, automatic screw fastening machines typically use a feeding system (vibratory feeder, feeding tube) to automatically sort and feed screws. High-precision electric or pneumatic screwdrivers (bits) are used in conjunction with a servo drive system to achieve precise screw gripping, positioning, screwing, and torque control, ensuring that each screw meets the preset tightening torque requirements.

[0004] Chinese patent application CN106849531A discloses an automatic screw-on motor assembly line, including a machine base, automatic screw-on machine A, automatic screw-on machine B, a robot arm, a positioning fixture, a fixture guide rail, a transmission positioning cylinder A, a transmission positioning cylinder B, a slider, a slider guide rail, and a metal sensor. The machine base is arranged from left to right with automatic screw-on machine A, automatic screw-on machine B, and the robot arm. Fixture guide rails are arranged on the front and rear sides of the machine base, and positioning fixtures are mounted on the fixture guide rails. A slider guide rail is arranged on the left side of the machine base. A slider guide rail is arranged between automatic screw-on machine B and the robot arm. Sliders are mounted on the two slider guide rails, and fixture guide rails are mounted on the sliders. Transmission positioning cylinders A and B are respectively located at the front left of automatic screw-on machine A and automatic screw-on machine B. A metal sensor is located at the bottom of automatic screw-on machine A and automatic screw-on machine B. This design saves a significant amount of manpower and improves production efficiency. Chinese patent application CN104810986A discloses a micro geared motor assembly machine, comprising a box-type frame, a human-machine controller, a reducer supply mechanism, a reducer switching mechanism, a motor supply mechanism, a motor switching mechanism, a screw supply mechanism, a screw switching and tightening mechanism, and a finished product hopper mechanism. The reducer supply mechanism, finished product hopper mechanism, and motor supply mechanism are mounted along the horizontal axis on the worktable of the box-type frame. The reducer switching mechanism is located to the left of the reducer supply mechanism, and the motor switching mechanism is located to the right of the motor supply mechanism. A screw switching and tightening mechanism is located behind the finished product hopper mechanism, and a screw supply mechanism is located to the left of the screw switching and tightening mechanism. A human-machine controller is installed to the left of the screw supply mechanism. The box-type frame contains a control circuit, which can replace workers in assembling micro geared motors, improving production efficiency and reducing production costs.

[0005] The aforementioned patents and prior art also have the following defects: The inability to easily adjust the number of locking structures, the inability to adapt to motor assemblies with different numbers of locking points, and the inability to easily adjust the spacing and position of locking structures among multiple locking structures result in low equipment versatility and difficulty in adjusting the number and position of locking points when assembling motors with different locking points.

[0006] Therefore, this application provides an electric motor assembly device and an automatic screw-on method for assembling automotive electric motors to meet the requirements. Summary of the Invention

[0007] The purpose of this application is to provide an electric motor assembly device and an automatic screw-on method for assembling automotive electric motors. The design of the mounting longitudinal groove and the mounting transverse groove, together with the mounting bolts, allows the position of the mounting block to be adjusted on the plane of the mounting plate, greatly enhancing the flexibility of the device and enabling it to adapt to changes in the screw hole spacing on workpieces of different specifications. The connecting rod is connected to the transmission rod through a universal joint, so even if the position of the transmission rod changes due to the movement of the tightening head, the rotational power can still be effectively transmitted to the transmission rod, ensuring the realization of the tightening function.

[0008] To achieve the above objectives, this application provides the following technical solution: a motor assembly device, comprising a feeding module and a tightening module, wherein the tightening module includes a mounting plate and a plurality of tightening assemblies, wherein the plurality of tightening assemblies are mounted on the mounting plate, the tightening assemblies are capable of vertical movement, and the tightening assemblies include a tightening head, a tightening bit, and a transmission rod, wherein the transmission rod is capable of driving the tightening bit to rotate, and the feeding module is capable of feeding screws into the tightening head; when the tightening head descends and abuts against the workpiece, the transmission rod descends and rotates within the tightening head. The mounting plate has several longitudinal mounting slots, and the mounting plate is provided with mounting blocks. The mounting blocks have transverse mounting slots, and mounting bolts are provided in the longitudinal and transverse mounting slots. The tightening assembly also includes a connecting rod, and the bottom of the connecting rod is connected to the transmission rod through a universal joint.

[0009] Preferably, the feeding module and the tightening module are jointly installed on the workbench. The tightening module further includes a fixing rod, a fixing cylinder, a connecting plate, a fixing plate, a lifting cylinder, and a rotary motor. The fixing rod is fixedly installed on the workbench, the connecting plate is fixedly installed on the fixing rod, the fixing cylinder is slidably sleeved on the fixing rod, the fixing plate is slidably sleeved on the fixing cylinder, the mounting plate is fixedly installed on the fixing cylinder, the lifting cylinder is fixedly installed on the connecting plate, the output end of the lifting cylinder is fixedly installed on the fixing plate, and the rotary motor is fixedly installed on the fixing plate.

[0010] Preferably, the tightening assembly further includes a tightening tube, a sliding spring, and a sliding rod. The connecting rod is hollow, the sliding spring is sleeved on the sliding rod, the sliding rod is inserted into the connecting rod, the top of the sliding rod is mounted on the output end of the rotary motor via a universal joint, the tightening head is fixedly mounted on the bottom of the tightening tube, the tightening tube is fixedly mounted on the mounting block, the transmission rod is slidably engaged within the tightening tube, the connecting rod has a moving groove, and a linkage block is fixedly mounted on the sliding rod, the linkage block being slidably engaged within the moving groove.

[0011] Preferably, the tightening module further includes a reset rod and a reset spring. The reset rod is fixedly mounted on the fixed plate, passes through the mounting plate and slides with the mounting plate. An anti-detachment block is fixedly mounted on the bottom of the reset rod and abuts against the mounting plate. The top of the reset spring is fixedly mounted on the fixed plate, the bottom of the reset spring is fixedly mounted on the mounting plate, and the reset spring is sleeved on the reset rod.

[0012] Preferably, the tightening head includes a tightening cylinder, a clamping spring, and clamping blocks. The tightening cylinder is fixedly installed at the bottom of the tightening tube. The feed tube is fixed and connected to the tightening cylinder and is inclined. Two clamping blocks are rotatably connected to the tightening cylinder. Each clamping block has a discharge groove, which together form a funnel-shaped hole. One end of the clamping spring is fixedly installed on the corresponding clamping block, and the other end of the clamping spring is fixedly installed on the tightening cylinder.

[0013] Preferably, the tightening module further includes a push cylinder and a placement fixture. The push cylinder is fixedly installed on the worktable, and the placement fixture is fixedly installed on the output end of the push cylinder. The placement fixture has a placement groove.

[0014] Preferably, the feeding module includes a fixed shell, a discharge assembly, and an air blowing assembly. The discharge assembly and the air blowing assembly are both disposed within the fixed shell. The discharge assembly includes a discharge shell, a discharge motor, a discharge plate, several rotating blades, two guide blades, and a discharge strip. One end of the discharge strip is disposed within the discharge shell, and the other end is disposed within the air blowing assembly. The discharge motor is fixedly mounted on the discharge shell, the discharge plate is fixedly mounted on the output end of the discharge motor, several rotating blades are fixedly mounted on the discharge plate, and two guide blades are fixedly mounted on the discharge strip, with the guide blades being inclined. The discharge strip has a discharge groove and a vibrator is installed on it, and the discharge strip is also inclined.

[0015] Preferably, the discharge assembly further includes a swing motor, a swing connecting rod, a swing rod, and a swing plate. The swing motor is fixedly mounted on the discharge shell, the active eccentric block is fixedly mounted on the output end of the swing motor, the passive eccentric block is fixedly mounted on the swing rod, one end of the swing connecting rod is rotatably connected to the active eccentric block, the other end of the swing connecting rod is rotatably connected to the passive eccentric block, the swing rod is rotatably connected inside the discharge shell, and the swing plate is fixedly mounted on the swing rod, with the swing plate positioned above the discharge bar.

[0016] Preferably, the air-blowing assembly includes a movable frame, two receiving plates, a blocking block, a release block, a blowing block, and several feeding pipes. The screws on the discharge bar can move between the two receiving plates. The receiving plates are disposed on the movable frame, which can move horizontally to switch between a receiving state and a dropping state. When the movable frame is in the receiving state, the two receiving plates abut against the discharge bar. When the movable frame is in the dropping state, the receiving plates correspond to the blowing block. The blocking block is located between the two receiving plates and can move between the two receiving plates. The blowing block is provided with several blowing holes. One end of each of the several feeding pipes is fixedly installed on the blowing block and communicates with the blowing holes. The other end of each feeding pipe is fixedly installed and communicates with the inlet pipe. When the movable frame switches from the receiving state to the dropping state, the release block pushes the two receiving plates to move away from each other, causing the screws on the receiving plates to fall into the blowing holes.

[0017] An automatic screw-fitting method for assembling an automotive motor, using the aforementioned motor assembly equipment, includes the following steps: The feeding module is responsible for feeding screws into each tightening head in an orderly manner; Place the workpiece under the tightening head; The tightening head moves downwards. After the tightening head descends and presses against the workpiece surface, the transmission rod moves downwards inside the tightening head and begins to rotate. The rotation of the transmission rod directly drives the tightening bit to rotate, thereby screwing the screw into the workpiece. When the position of the tightening head needs to be adjusted, loosen the mounting bolts and move the mounting block along the longitudinal direction of the mounting groove and the transverse direction of the mounting groove. The mounting block will move the tightening head to align with the screw hole on the workpiece.

[0018] In summary, the technical effects and advantages of this invention are as follows: 1. In this invention, the design of the longitudinal and transverse mounting grooves, together with the mounting bolts, allows the position of the mounting block to be adjusted on the plane of the mounting plate, greatly enhancing the flexibility of the equipment and enabling it to adapt to changes in the screw hole spacing on workpieces of different specifications. The connecting rod is connected to the transmission rod through a universal joint, so even if the position of the transmission rod changes due to the movement of the tightening head, the rotational power can still be effectively transmitted to the transmission rod, ensuring the realization of the tightening function. 2. In this invention, the inclined feed tube facilitates the screw to slide in. The funnel-shaped clamping hole formed by the clamping block under the action of the clamping spring can guide the screw to be positioned and reliably clamp the screw, ensuring that the screw maintains the correct posture and will not fall off before the screwdriver bit arrives. When the screwdriver bit presses down on the screw, the clamping block can automatically open to release the screw. The structure is simple and reliable. The clamping spring ensures the clamping force and allows the clamping block to automatically reset and close after the screw is screwed in.

[0019] 3. In this invention, the inclined discharge bar, under the action of vibration, makes the screws neatly arranged in the discharge groove with the screw heads on top and the rods stuck in the discharge groove. The screws move in a single row along the discharge groove towards the air blowing component, realizing the automatic sorting, arrangement and conveying of screws. It can efficiently sort messy screws into a single row with the rods facing down and arranged in an orderly manner, preparing for subsequent precise feeding. 4. In this invention, excess screws and messy screws stacked on the discharge bar or that have not fallen into the discharge trough correctly can be swept off, allowing only screws arranged in a single row in the discharge trough to pass through. This ensures that the screws entering the subsequent air blowing component are all arranged in an orderly single row, effectively preventing material jamming and poor material supply, and improving the reliability of the material supply system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention; Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing rod, fixing cylinder, fixing plate and rotary motor in this invention; Figure 4 For the present invention Figure 3 Enlarged view of section A; Figure 5 This is a schematic diagram of the structure of the sliding rod, connecting rod, transmission rod, tightening tube, and tightening head in this invention; Figure 6 This is a schematic diagram of the transmission rod, tightening bit, and tightening tube in this invention; Figure 7 This is a schematic diagram of the structure of the tightening cylinder, clamping spring, and clamping block in this invention; Figure 8 This is a schematic diagram of the structure of the discharge assembly and the air blowing assembly in this invention; Figure 9 This is a schematic diagram of the rotating blade and discharge bar in this invention; Figure 10 This is a schematic diagram of the structure of the swing motor, swing rod, and swing plate in this invention; Figure 11 This is a schematic diagram of the structure of the receiving plate, the moving frame, and the connecting frame in this invention; Figure 12 For the present invention Figure 11 A structural diagram of section B; Figure 13 This is a schematic diagram of the structure of the blowing block, air pump, and switching cylinder in this invention; Figure 14 This is a schematic diagram of the structure of the receiving plate and the partition plate in this invention; Figure 15 For the present invention Figure 14 Enlarged view of section C; Figure 16 This is a schematic diagram of the structure of the receiving plate and the blocking block in this invention.

[0022] In the diagram: 1. Feeding module; 101. Fixed shell; 102. Discharge assembly; 1021. Discharge shell; 1022. Discharge motor; 1023. Discharge plate; 1024. Rotating plate; 1025. Guide plate; 1026. Discharge bar; 1027. Swing motor; 1028. Swing connecting rod; 1029. Swing rod; 1020. Swing plate; 103. Air blowing assembly; 1031. Moving frame; 1032. Receiving plate; 1033. Blocking block; 1034. Release block; 1035. Blowing block; 1036. Feeding pipe; 1037. Sliding block; 1038. Moving block; 1039. Adjusting screw; 1040. Air blowing shell; 1041. Connecting frame; 1042. Push rod; 1043. Push plate; 1044. Release rod; 1045. 1. Push spring; 1046. Push block; 1047. Divider plate; 1048. Air pump; 1049. Switching cylinder; 2. Tightening module; 201. Mounting plate; 2011. Mounting block; 202. Tightening assembly; 2021. Tightening head; 20211. Tightening cylinder; 20212. Clamping spring; 20213. Clamping block; 2022. Tightening bit; 2023. Transmission rod; 2024. Connecting rod; 2025. Tightening tube; 2026. Sliding spring; 2027. Sliding rod; 203. Fixing rod; 204. Fixing cylinder; 205. Connecting plate; 206. Fixing plate; 207. Lifting cylinder; 208. Rotary motor; 209. Reset rod; 210. Reset spring; 211. Push cylinder; 212. Placement fixture; 3. Workbench. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Reference Figures 1-14 The motor assembly equipment shown includes a feeding module 1 and a tightening module 2. The tightening module 2 includes a mounting plate 201 and several tightening components 202. The tightening components 202 are all mounted on the mounting plate 201. The tightening components 202 can move vertically. The tightening components 202 include a tightening head 2021, a tightening bit 2022 and a transmission rod 2023. The transmission rod 2023 can drive the tightening bit 2022 to rotate. The feeding module 1 can feed screws into the tightening head 2021. When the tightening head 2021 descends and abuts against the workpiece, the transmission rod 2023 descends and rotates within the tightening head 2021. The mounting plate 201 has several longitudinal mounting slots, and the mounting plate 201 has a mounting block 2011. The mounting block 2011 has a mounting transverse slot, and the longitudinal and transverse mounting slots are fitted with mounting bolts. The tightening assembly 202 also includes a connecting rod 2024, and the bottom of the connecting rod 2024 is connected to the transmission rod 2023 via a universal joint.

[0025] The feeding module 1 is responsible for feeding screws into each tightening head 2021 in an orderly manner. The tightening assembly 202, as a whole, can move vertically under the drive of the equipment. When the tightening head 2021 descends and presses against the surface of the workpiece, the transmission rod 2023 will move downward inside the tightening head 2021 and start to rotate. The rotation of the transmission rod 2023 directly drives the tightening bit 2022 to rotate, thereby screwing the screw into the workpiece. The mounting block 2011 is fixed to the mounting plate 201 by mounting bolts. The mounting bolts pass through the mounting transverse groove on the mounting block 2011 and the mounting longitudinal groove on the mounting plate 201. By loosening the mounting bolts, the position of the mounting block 2011 can be moved longitudinally along the mounting longitudinal groove and laterally along the mounting transverse groove.

[0026] The design of the longitudinal and transverse mounting slots, along with the mounting bolts, allows the position of the mounting block 2011 to be adjusted on the plane of the mounting plate 201, greatly enhancing the flexibility of the equipment and enabling it to adapt to changes in the spacing of screw holes on workpieces of different specifications. The connecting rod 2024 is connected to the transmission rod 2023 via a universal joint. Even if the position of the transmission rod 2023 changes due to the movement of the tightening head 2021, the rotational power can still be effectively transmitted to the transmission rod 2023, ensuring the realization of the tightening function.

[0027] Furthermore, the feeding module 1 and the tightening module 2 are jointly installed on the workbench 3. The tightening module 2 also includes a fixing rod 203, a fixing cylinder 204, a connecting plate 205, a fixing plate 206, a lifting cylinder 207, and a rotary motor 208. The fixing rod 203 is fixedly installed on the workbench 3, the connecting plate 205 is fixedly installed on the fixing rod 203, the fixing cylinder 204 is slidably sleeved on the fixing rod 203, the fixing plate 206 is slidably sleeved on the fixing cylinder 204, the mounting plate 201 is fixedly installed on the fixing cylinder 204, the lifting cylinder 207 is fixedly installed on the connecting plate 205, the output end of the lifting cylinder 207 is fixedly installed on the fixing plate 206, and the rotary motor 208 is fixedly installed on the fixing plate 206.

[0028] When the lifting cylinder 207 is activated, it drives the fixed plate 206 to rise and fall along the fixed cylinder 204. Since the rotary motor 208 is fixed on the fixed plate 206, its output end also rises and falls accordingly.

[0029] Furthermore, the tightening assembly 202 also includes a tightening tube 2025, a sliding spring 2026, and a sliding rod 2027. The connecting rod 2024 is hollow. The sliding spring 2026 is sleeved on the sliding rod 2027. The sliding rod 2027 is inserted into the connecting rod 2024. The top of the sliding rod 2027 is mounted on the output end of the rotary motor 208 via a universal joint. The tightening head 2021 is fixedly mounted on the bottom of the tightening tube 2025. The tightening tube 2025 is fixedly mounted on the mounting block 2011. The transmission rod 2023 is slidably fitted inside the tightening tube 2025. A moving groove is provided on the connecting rod 2024. A linkage block is fixedly installed on the sliding rod 2027. The linkage block is slidably fitted inside the moving groove.

[0030] Furthermore, the output end of the rotary motor 208 drives the sliding rod 2027 to rotate via a universal joint. The sliding rod 2027 is inserted into the hollow connecting rod 2024. The two are slidably engaged with each other via a linkage block and a moving groove on the connecting rod 2024, allowing the rotational power to be transmitted from the sliding rod 2027 to the connecting rod 2024. At the same time, the sliding rod 2027 is allowed to slide relative to the connecting rod 2024 in the axial direction. The sliding spring 2026 is set on the sliding rod 2027 and fixed to the top of the connecting rod 2024, applying an upward elastic force to the sliding rod 2027. The tightening tube 2025 is fixed on the mounting block 2011, and the tightening head 2021 is fixed to the bottom of the tightening tube 2025. The transmission rod 2023 can slide and rotate within the tightening tube 2025, and its top is connected to the bottom of the connecting rod 2024 via a universal joint. Therefore, the rotation of the connecting rod 2024 drives the transmission rod 2023 and the tightening head 2022 to rotate.

[0031] Furthermore, the tightening module 2 also includes a reset rod 209 and a reset spring 210. The reset rod 209 is fixedly installed on the fixing plate 206. The reset rod 209 passes through the mounting plate 201 and slides in cooperation with the mounting plate 201. The anti-detachment block is fixedly installed at the bottom of the reset rod 209 and abuts against the mounting plate 201. The top of the reset spring 210 is fixedly installed on the fixing plate 206, and the bottom of the reset spring 210 is fixedly installed on the mounting plate 201. The reset spring 210 is sleeved on the reset rod 209.

[0032] The reset rod 209 is fixed on the fixed plate 206 driven by the lifting cylinder 207 and slides through the hole on the mounting plate 201. The anti-detachment block is located at the bottom of the reset rod 209 to prevent the mounting plate 201 from detaching from the reset rod 209. The reset spring 210 is sleeved on the outside of the reset rod 209, and its two ends are fixed on the fixed plate 206 and the mounting plate 201 respectively. When the lifting cylinder 207 drives the fixed plate 206 to move downward, the reset spring 210 is compressed between the fixed plate 206 and the mounting plate 201, pushing the mounting plate 201, the fixed cylinder 204, and the tightening assembly 202 to move downward together. When the tightening head 2021 contacts the workpiece and is blocked, the fixed plate 206 continues to move downward and will further compress the reset spring 210. At this time, the mounting plate 201 stops moving downward and is blocked by the workpiece, while the fixed plate 206 and the rotary motor 208 continue to move downward. When the lifting cylinder 207 retracts, the reset spring 210 recovers, and the anti-detachment block drives the mounting plate 201 to rise and reset together with the fixed plate 206.

[0033] Example 2, refer to Figures 1-14 Unlike the above embodiments, the tightening head 2021 includes a tightening cylinder 20211, a clamping spring 20212, and a clamping block 20213. The tightening cylinder 20211 is fixedly installed at the bottom of the tightening tube 2025. The feed tube is fixed and connected to the tightening cylinder 20211 and is inclined. Two clamping blocks 20213 are rotatably connected to the tightening cylinder 20211. Both clamping blocks 20213 have a feeding groove, which together form a funnel-shaped hole. One end of the clamping spring 20212 is fixedly installed on the corresponding clamping block 20213, and the other end of the clamping spring 20212 is fixedly installed on the tightening cylinder 20211.

[0034] The screw enters the tightening cylinder 20211 through the inclined feed tube. Two clamping blocks 20213 are mounted at the bottom of the tightening cylinder 20211 via a rotating shaft. Under the pushing action of the clamping spring 20212, the two clamping blocks 20213 are normally in a closed state. The feed grooves on them are combined to form a funnel-shaped hole that is larger at the top and smaller at the bottom. This hole can guide the screw shank downwards and hold the screw head with the force of the clamping block 20213 and the clamping spring 20212, keeping it upright and preventing it from falling off before tightening. When the tightening bit 2022 descends and inserts into the screw head slot and applies downward pressure, the screw head will push the clamping block 20213 open and move downwards, and be completely tightened onto the workpiece.

[0035] Example 3, referring to Figures 1-14 Unlike the above embodiments, the tightening module 2 also includes a push cylinder 211 and a placement fixture 212. The push cylinder 211 is fixedly installed on the workbench 3, and the placement fixture 212 is fixedly installed on the output end of the push cylinder 211. The placement fixture 212 has a placement groove.

[0036] The inclined feed tube facilitates screw insertion. The funnel-shaped clamping hole formed by the clamping block 20213 under the action of the clamping spring 20212 can guide the screw positioning and reliably clamp the screw, ensuring that the screw maintains the correct posture and will not fall off before the screwdriver bit 2022 arrives. When the screwdriver bit 2022 presses down on the screw, the clamping block 20213 can automatically open to release the screw. The structure is simple and reliable. The clamping spring 20212 ensures the clamping force and allows the clamping block 20213 to automatically reset and close after the screw is screwed in.

[0037] Example 4, refer to Figures 1-14 Unlike the above embodiments, the feeding module 1 includes a fixed housing 101, a discharge assembly 102, and an air blowing assembly 103. Both the discharge assembly 102 and the air blowing assembly 103 are disposed within the fixed housing 101. The discharge assembly 102 includes a discharge shell 1021, a discharge motor 1022, a discharge plate 1023, several rotating blades 1024, two guide plates 1025, and a discharge bar 1026. One end of the discharge bar 1026 is disposed within the discharge shell 1021, and the other end is disposed within the discharge shell 1021. Inside the air blowing assembly 103, the discharge motor 1022 is fixedly installed on the discharge shell 1021, the discharge plate 1023 is fixedly installed on the output end of the discharge motor 1022, several rotating blades 1024 are fixedly installed on the discharge plate 1023, two guide blades 1025 are fixedly installed on the discharge bar 1026, and the guide blades 1025 are inclined. The discharge bar 1026 has a discharge groove, a vibrator is installed on the discharge bar 1026, and the discharge bar 1026 is inclined.

[0038] Screws are poured into the discharge housing 1021. The discharge motor 1022 drives the discharge plate 1023 to rotate, and the rotating plate 1024 fixed on the discharge plate 1023 rotates accordingly, lifting the screws from the bottom of the discharge housing 1021 to a higher position. The screws that reach the top fall from the rotating plate 1024 into the starting end of the discharge bar 1026. The inclined guide plate 1025 helps guide the falling screws into the discharge trough. The vibrator makes the discharge bar 1026 vibrate continuously. Under the action of vibration, the inclined discharge bar 1026 arranges the screws neatly in the discharge trough with the screw heads facing up and the rods stuck in the discharge trough. The screws move in a single row along the discharge trough towards the air blowing assembly 103, realizing the automatic sorting, arrangement and conveying of screws. It can efficiently sort messy screws into a single row with the rods facing down and arranged in an orderly manner, preparing for subsequent precise feeding.

[0039] Example 5, refer to Figures 1-14Unlike the above embodiments, the discharge assembly 102 further includes a swing motor 1027, a swing connecting rod 1028, a swing rod 1029, and a swing plate 1020. The swing motor 1027 is fixedly installed on the discharge shell 1021. The active eccentric block is fixedly installed on the output end of the swing motor 1027. The passive eccentric block is fixedly installed on the swing rod 1029. One end of the swing connecting rod 1028 is rotatably connected to the active eccentric block, and the other end of the swing connecting rod 1028 is rotatably connected to the passive eccentric block. The swing rod 1029 is rotatably connected inside the discharge shell 1021. The swing plate 1020 is fixedly installed on the swing rod 1029 and is positioned above the discharge bar 1026.

[0040] The oscillating motor 1027 drives the active eccentric block to rotate. The active eccentric block drives the passive eccentric block to oscillate through the oscillating connecting rod 1028. The passive eccentric block drives the oscillating rod 1029 to oscillate back and forth around its axis. The oscillating plate 1020 fixed on the oscillating rod 1029 then oscillates back and forth above the discharge bar 1026. This can sweep away excess screws and messy screws that are stacked on the discharge bar 1026 or have not fallen into the discharge trough correctly. Only screws arranged in a single row in the discharge trough are allowed to pass through, ensuring that the screws entering the subsequent air blowing assembly 103 are all in an orderly single row. This effectively prevents jamming and poor feeding, and improves the reliability of the feeding system.

[0041] Example 6, refer to Figures 1-14 Unlike the above embodiments, the air blowing assembly 103 includes a movable frame 1031, two receiving plates 1032, a blocking block 1033, a releasing block 1034, a blowing block 1035, and several feeding pipes 1036. The screws on the discharge bar 1026 can move between the two receiving plates 1032. The receiving plates 1032 are mounted on the movable frame 1031, which can move horizontally to switch between a receiving state and a discharge state. When the movable frame 1031 is in the receiving state, the two receiving plates 1032 abut against the discharge bar 1026. When the movable frame 1031 is in the discharge state, the receiving plates 1032 abut against the discharge bar 1026. 032 corresponds to the blowing block 1035. The blocking block 1033 is located between the two receiving plates 1032 and can move between the two receiving plates 1032. The blowing block 1035 is provided with several blowing holes. One end of several feeding pipes 1036 is fixedly installed on the blowing block 1035 and communicates with the blowing holes. The other end of the feeding pipes 1036 is fixed and communicates with the inlet pipe. When the moving frame 1031 switches from the receiving state to the dropping state, the release block 1034 pushes the two receiving plates 1032 to move away from each other, so that the screws on the receiving plates 1032 fall into the blowing holes.

[0042] The orderly screws conveyed from the end of the discharge bar 1026 enter the area between the two receiving plates 1032 and are blocked and positioned by the movable blocking block 1033. At this time, the moving frame 1031 is in the receiving state, and the receiving plate 1032 is connected to the end of the discharge bar 1026 to prevent the screws from falling off prematurely. When feeding is required, the moving frame 1031 moves horizontally to the dropping state. During this movement, the release block 1034 causes the two receiving plates 1032 to move away from each other and open up. The screw heads that were originally supported by the receiving plates 1032 lose their support, and the screws fall vertically into the corresponding blowing hole of the blowing block 1035. The blowing hole is connected to the feed pipe of the tightening head 2021 through the feed pipe 1036. The position of the blocking block 1033 determines the number of screws that stay on the receiving plate 1032 waiting to be released each time.

[0043] Furthermore, the air blowing assembly 103 also includes a sliding block 1037, a moving block 1038, and an adjusting screw 1039. A sliding groove is provided on the receiving plate 1032. The sliding block 1037 is fixedly installed on the blocking block 1033 and slides in the sliding groove. A moving hole is provided on the sliding block 1037 and slides in the moving hole. A retaining ring is fixedly installed at both ends of the moving block 1038. The adjusting screw 1039 is rotatably connected in the sliding groove and passes through the moving block 1038 and is threadedly engaged with the moving block 1038.

[0044] The blocking block 1033 is installed in the sliding groove of the receiving plate 1032 via the sliding block 1037, and can move in the sliding groove. The sliding block 1037 has a moving hole, and the moving block 1038 can slide in the hole. The retaining rings at both ends of the moving block 1038 restrict its disengagement. The adjusting screw 1039 passes through the moving block 1038 and is threadedly engaged with it. When the adjusting screw 1039 is rotated, the moving block 1038 cannot rotate because it is constrained by the retaining rings and the moving hole. That is, the moving block 1038 and the moving hole are rectangular. The movement of the moving block 1038 drives the sliding block 1037 and the blocking block 1033 to move in the sliding groove of the receiving plate 1032. The position of the blocking block 1033 between the two receiving plates 1032 can be easily fine-tuned, thereby changing the size of the receiving area and precisely controlling the number of screws that stop on the receiving plate 1032 and are released each time. It can match different numbers of tightening heads 2021, enhancing the adaptability of the equipment.

[0045] When the two receiving plates 1032 open, the receiving plates 1032 drive the adjusting screw 1039 and the moving block 1038 to move. The moving block 1038 moves in the moving hole, so that the position of the blocking block 1033 remains unchanged.

[0046] Furthermore, the air blowing assembly 103 also includes an air blowing shell 1040, a connecting frame 1041, a push rod 1042, a push plate 1043, a release rod 1044, a push spring 1045, and a push block 1046. The connecting frame 1041 is fixedly installed on the movable frame 1031, the push rod 1042 is fixedly installed inside the connecting frame 1041, the push plate 1043 is fixedly installed on the receiving plate 1032, the push plate 1043 is slidably fitted on the push rod 1042, and one end of the push spring 1045 is fixedly installed on the push rod. On 1042, the other end of the push spring 1045 is fixedly installed on the push plate 1043, the push block 1046 is fixedly installed on the push plate 1043, the end of the push block 1046 is inclined, the release block 1034 is located inside the connecting frame 1041, the release rod 1044 is fixedly installed on the top of the release block 1034, the air blowing shell 1040 is fixedly installed inside the fixed shell 101, the air blowing shell 1040 is provided with a release hole, the release block 1034 is inclined, and the release rod 1044 is slidably engaged in the release hole.

[0047] When the moving frame 1031 moves from the receiving state to the unloading state, the connecting frame 1041 moves accordingly. Since the release rod 1044 is constrained to slide within the inclined release hole, the horizontal movement of the connecting frame 1041 forces the release rod 1044 to move along the inclined trajectory of the release hole. The moving release block 1034 presses the inclined surface of the push block 1046 with its inclined surface, overcoming the force of the push spring 1045 and pushing the push block 1046 to move. The push block 1046 drives the push plate 1043 to slide along the push rod 1042. The push plate 1043 then drives the fixed receiving plate 1032 to move, causing the two receiving plates 1032 to open away from each other and release the screw. This ensures that the screw can be forcibly released each time it moves to the unloading position. The push spring 1045 ensures that the receiving plate 1032 can reliably close and support the screw when in the receiving state.

[0048] A limit strip is fixedly installed on the push plate 1043, and a limit groove is opened on the release block 1034. The limit strip slides in the limit groove.

[0049] The cooperation between the limiting strip and the limiting groove constrains the relative movement direction between the release block 1034 and the pushing block 1046, ensuring that when the release block 1034 presses against the inclined surface of the pushing block 1046, the release block 1034 can only move along the direction of the limiting strip, preventing jamming or misalignment and improving the reliability of the action.

[0050] Furthermore, the air blowing assembly 103 also includes several partition plates 1047, an air pump 1048, and a switching cylinder 1049. The partition plates 1047 are all fixedly installed inside the air blowing shell 1040. The moving frame 1031 has partition holes corresponding to the partition plates 1047. The switching cylinder 1049 is fixedly installed on the air blowing shell 1040. The connecting frame 1041 is fixedly installed on the output end of the switching cylinder 1049. The air pump 1048 is fixedly installed inside the air blowing shell 1040. One end of several diverter pipes is fixed and connected to the output end of the air pump 1048. The other end of several diverter pipes is fixed to the blowing block 1035 and connected to the blowing hole.

[0051] When the switching cylinder 1049 is activated, it drives the connecting frame 1041 to move horizontally, which in turn drives the moving frame 1031 to move horizontally. The partition plate 1047, which is fixedly installed in the air blowing shell 1040, will be inserted into the partition hole on the moving frame 1031 when the moving frame 1031 moves to the material dropping state, thus being located between adjacent screws and playing a separating role. The air pump 1048 generates compressed air, which is distributed to each blowing hole of the blowing block 1035 through the distribution pipe. When the screw falls into the blowing hole, the moving frame 1031 resets and closes the top of the blowing hole. The compressed air is blown out from the blowing hole, and the screw is blown into the corresponding tightening head 2021 through the feeding pipe 1036.

[0052] Furthermore, the bottom of the movable frame 1031 is provided with a discharge hole corresponding to the blowing hole, and the inner wall of the movable frame 1031 is inclined towards the discharge hole to prevent the screw from getting stuck in the movable frame 1031.

[0053] As another preferred embodiment, this motor assembly equipment is used in the assembly of motors for household appliances.

[0054] An automatic screw-fitting method for assembling an automotive motor, using the aforementioned motor assembly equipment, includes the following steps: The feeding module 1 is responsible for feeding the screws into each tightening head 2021 in an orderly manner; Place the workpiece under the tightening head 2021; The tightening head 2021 moves downward. After the tightening head 2021 descends and presses against the surface of the workpiece, the transmission rod 2023 moves downward inside the tightening head 2021 and begins to rotate. The rotation of the transmission rod 2023 directly drives the tightening bit 2022 to rotate, thereby screwing the screw into the workpiece. When the position of the tightening head 2021 needs to be adjusted, loosen the mounting bolts and move the mounting block 2011 along the longitudinal direction of the mounting groove and the transverse direction of the mounting groove. The mounting block 2011 will move the tightening head 2021 to align with the screw hole on the workpiece. Working principle of the invention: The screw is placed inside the discharge housing 1021. The discharge motor 1022 drives the discharge plate 1023 to rotate, which in turn drives several rotating plates 1024 to rotate. The rotating plates 1024 cause the screw inside the discharge housing 1021 to move. When the screw reaches a high position, it falls from the rotating plates 1024 onto the guide plate 1025 and enters the discharge groove on the discharge bar 1026 under the guidance of the guide plate 1025. The vibrator drives the discharge bar 1026 to vibrate, causing the screw shaft to be aligned and enter the discharge groove, while the screw head is positioned above the discharge bar 1026. The swing motor 1027 drives the active eccentric block to rotate, which in turn drives the swing connecting rod 1028 to rotate. The swing connecting rod 1028 drives the passive eccentric block to swing. The moving eccentric block drives the swing rod 1029 to swing, which in turn drives the swing plate 1020 to swing. The swing plate 1020 pushes the messy screws on the discharge bar 1026 down. Under the action of vibration, the screws on the discharge bar 1026 move to the receiving plate 1032. The blocking block 1033 blocks the screws, thereby controlling the number of screws that move to the receiving plate 1032. The switching cylinder 1049 drives the connecting frame 1041 and the moving frame 1031 to move. The moving frame 1031 drives the two receiving plates 1032 to move. The partition plate 1047 moves between several screw rods. During the movement, the release rod 1044 moves along the inclined trajectory of the release hole. The release rod 1044 drives the release block 1034 to move. Release block 1034 presses and pushes block 1046 to move, push block 1046 drives push plate 1043 to move, push plate 1043 drives receiving plate 1032 to move, the two receiving plates 1032 move away from each other, releasing the head of the screw, the screw falls into the blowing hole of blowing block 1035, air pump 1048 introduces compressed air into the blowing hole, blowing the screw through feeding pipe 1036 into tightening head 2021, placing the workpiece in placement fixture 212, pushing cylinder 211 to move placement fixture 212, moving the workpiece below tightening head 2021, lifting cylinder 207 drives fixing plate 206 to move downward, fixing plate 206 drives mounting plate 201 to move downward through return spring 210. The mounting plate 201 moves the tightening tube 2025 downward, which in turn moves the tightening head 2021 downward. The tightening head 2021 abuts against the screw hole on the workpiece. Then, the fixing plate 206 continues to descend, causing the rotary motor 208, connecting rod 2024, sliding rod 2027, transmission rod 2023, and tightening bit 2022 to continue descending. The rotary motor 208 drives the sliding rod 2027 to rotate via a universal joint. The sliding rod 2027 drives the connecting rod 2024 to rotate. The connecting rod 2024 drives the transmission rod 2023 to rotate via a universal joint. The transmission rod 2023 drives the tightening bit 2022 to rotate. The tightening bit 2022 descends and abuts against the screw, causing the screw to rotate and screwing the screw into the workpiece.

[0055] When it is necessary to adjust the distance between several tightening heads 2021, loosen the mounting bolts and move the mounting block 2011. At this time, the mounting bolts move in the mounting longitudinal groove and the mounting transverse groove. When the tightening head 2021 moves to the appropriate position, tighten the mounting bolts. Since the rotary motor 208 drives the tightening bit 2022 to rotate through the universal joint, the tightening head 2021 can still drive the tightening bit 2022 to rotate after moving its position. Since the sliding rod 2027 is slidably engaged in the connecting rod 2024, and the connecting rod 2024 is provided with a sliding spring 2026, the tightening bit 2022 still has enough descent to tighten the screw after the position is adjusted.

[0056] When the number of tightening heads 2021 needs to be adjusted to match workpieces with different numbers of screw holes, the number of tightening components 202 is increased on the mounting plate 201. The mounting block 2011 is installed in the mounting plate 201 by mounting bolts and adjusted to a suitable position. At the same time, the adjusting screw 1039 is rotated, which drives the moving block 1038 to move. The moving block 1038 drives the sliding block 1037 to move. The sliding block 1037 drives the blocking block 1033 to move. The number of screws entering between the two receiving plates 1032 is adjusted so that the number of screws is consistent with the number of tightening heads 2021.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A motor assembly device, comprising a feeding module and a tightening module, characterized in that: The tightening module includes a mounting plate and several tightening assemblies. The tightening assemblies are all mounted on the mounting plate. The tightening assemblies can move vertically. Each tightening assembly includes a tightening head, a tightening bit, and a transmission rod. The transmission rod can drive the tightening bit to rotate. The feeding module can feed screws into the tightening head. When the tightening head descends and abuts against the workpiece, the transmission rod descends and rotates within the tightening head. The mounting plate has several longitudinal mounting slots, and the mounting plate is provided with mounting blocks. The mounting blocks have transverse mounting slots, and mounting bolts are provided in the longitudinal and transverse mounting slots. The tightening assembly also includes a connecting rod, and the bottom of the connecting rod is connected to the transmission rod through a universal joint.

2. The motor assembly equipment according to claim 1, characterized in that: The feeding module and the tightening module are jointly installed on the workbench. The tightening module also includes a fixed rod, a fixed cylinder, a connecting plate, a fixed plate, a lifting cylinder, and a rotary motor. The fixed rod is fixedly installed on the workbench, the connecting plate is fixedly installed on the fixed rod, the fixed cylinder is slidably sleeved on the fixed rod, the fixed plate is slidably sleeved on the fixed cylinder, the mounting plate is fixedly installed on the fixed cylinder, the lifting cylinder is fixedly installed on the connecting plate, the output end of the lifting cylinder is fixedly installed on the fixed plate, and the rotary motor is fixedly installed on the fixed plate.

3. The motor assembly equipment according to claim 2, characterized in that: The tightening assembly also includes a tightening tube, a sliding spring, and a sliding rod. The connecting rod is hollow, the sliding spring is sleeved on the sliding rod, and the sliding rod is inserted into the connecting rod. The top of the sliding rod is mounted on the output end of the rotary motor via a universal joint. The tightening head is fixedly mounted on the bottom of the tightening tube, and the tightening tube is fixedly mounted on the mounting block. The transmission rod is slidably engaged within the tightening tube. A moving groove is provided on the connecting rod, and a linkage block is fixedly mounted on the sliding rod, with the linkage block slidably engaged within the moving groove.

4. The motor assembly equipment according to claim 2, characterized in that: The tightening module also includes a reset rod and a reset spring. The reset rod is fixedly installed on the fixed plate, passes through the mounting plate and slides with the mounting plate. An anti-dislodgement block is fixedly installed at the bottom of the reset rod and abuts against the mounting plate. The top of the reset spring is fixedly installed on the fixed plate, the bottom of the reset spring is fixedly installed on the mounting plate, and the reset spring is sleeved on the reset rod.

5. The motor assembly equipment according to claim 3, characterized in that: The tightening head includes a tightening cylinder, a clamping spring, and clamping blocks. The tightening cylinder is fixedly installed at the bottom of the tightening tube. The feed tube is fixed and connected to the tightening cylinder and is inclined. Two clamping blocks are rotatably connected to the tightening cylinder. Each clamping block has a discharge groove, which together form a funnel-shaped hole. One end of the clamping spring is fixedly installed on the corresponding clamping block, and the other end of the clamping spring is fixedly installed on the tightening cylinder.

6. The motor assembly equipment according to claim 2, characterized in that: The tightening module also includes a push cylinder and a placement fixture. The push cylinder is fixedly installed on the worktable, and the placement fixture is fixedly installed on the output end of the push cylinder. The placement fixture has a placement slot.

7. The motor assembly equipment according to claim 1, characterized in that: The feeding module includes a fixed shell, a discharge assembly, and an air blowing assembly. Both the discharge assembly and the air blowing assembly are disposed within the fixed shell. The discharge assembly includes a discharge shell, a discharge motor, a discharge plate, several rotating blades, two guide blades, and a discharge strip. One end of the discharge strip is disposed within the discharge shell, and the other end is disposed within the air blowing assembly. The discharge motor is fixedly mounted on the discharge shell, and the discharge plate is fixedly mounted on the output end of the discharge motor. Several rotating blades are fixedly mounted on the discharge plate, and two guide blades are fixedly mounted on the discharge strip, with the guide blades being inclined. The discharge strip has a discharge groove and a vibrator is installed on it, with the discharge strip also being inclined.

8. The motor assembly equipment according to claim 7, characterized in that: The discharge assembly also includes a swing motor, a swing connecting rod, a swing rod, and a swing plate. The swing motor is fixedly mounted on the discharge shell. The active eccentric block is fixedly mounted on the output end of the swing motor. The passive eccentric block is fixedly mounted on the swing rod. One end of the swing connecting rod is rotatably connected to the active eccentric block, and the other end of the swing connecting rod is rotatably connected to the passive eccentric block. The swing rod is rotatably connected inside the discharge shell. The swing plate is fixedly mounted on the swing rod and is positioned above the discharge bar.

9. The motor assembly equipment according to claim 7, characterized in that: The air-blowing assembly includes a movable frame, two receiving plates, a blocking block, a release block, a blowing block, and several feeding pipes. The screws on the discharge bar can move between the two receiving plates. The receiving plates are disposed on the movable frame, which can move horizontally to switch between a receiving state and a dropping state. When the movable frame is in the receiving state, the two receiving plates abut against the discharge bar. When the movable frame is in the dropping state, the receiving plates correspond to the blowing block. The blocking block is located between the two receiving plates and can move between the two receiving plates. The blowing block is provided with several blowing holes. One end of each of the several feeding pipes is fixedly installed on the blowing block and communicates with the blowing holes. The other end of each feeding pipe is fixedly installed and communicates with the inlet pipe. When the movable frame switches from the receiving state to the dropping state, the release block pushes the two receiving plates to move away from each other, causing the screws on the receiving plates to fall into the blowing holes.

10. An automatic screw-fitting method for assembling an automotive motor, using the motor assembly equipment as described in any one of claims 1-9, characterized in that: Includes the following steps: The feeding module is responsible for feeding screws into each tightening head in an orderly manner; Place the workpiece under the tightening head; The tightening head moves downwards. After the tightening head descends and presses against the workpiece surface, the transmission rod moves downwards inside the tightening head and begins to rotate. The rotation of the transmission rod directly drives the tightening bit to rotate, thereby screwing the screw into the workpiece. When the position of the tightening head needs to be adjusted, loosen the mounting bolts and move the mounting block along the longitudinal direction of the mounting groove and the transverse direction of the mounting groove. The mounting block will move the tightening head to align with the screw hole on the workpiece.

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