A middle cover assembly device

Abstract

This utility model discloses a middle cover assembly device, including a production line unit, a transfer and pressing unit, and a lifting and detection unit. The production line unit feeds a workpiece plate containing workpieces into a designated position inside the assembly device. The transfer and pressing unit is used to straighten the external middle cover and grip it onto the corresponding workpiece for assembly. The lifting and detection unit is used to detect whether the middle cover pins are inserted into the PCB board in place, thereby determining whether the assembly is qualified. The production line unit includes a conveyor frame with two opposing double-speed chains mounted on it. A three-phase asynchronous motor is fixed to the outside of the conveyor frame, and the output end of the conveyor frame is used to synchronously drive the double-speed chains. The workpiece plate is slidably disposed inside the conveyor frame, and the double-speed chains are movably connected to the workpiece plate. Several sets of fixing components are fixed on the workpiece plate for placing the PCB board. This utility model has the advantage of improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of smoke alarm technology, and in particular to a middle cover assembly device. Background Technology

[0002] Smoke detectors are essential devices for preventing home fires. Their main function is to trigger an alarm when a large amount of smoke is detected, thus alerting people to take measures to prevent the fire from starting or spreading. The sensitivity of fire alarms is usually adjusted according to geographical location and application environment to ensure effective detection in the early stages of a fire.

[0003] With the increasing use of fire and electricity in modern households, the frequency of household fires is rising. Once a household fire occurs, factors such as delayed firefighting, lack of fire extinguishers, panic among those present, and slow escape can easily lead to significant loss of life and property. Exploring the characteristics of household fires and fire prevention strategies is of practical significance for preventing household fires and reducing fire losses, and the circuit board, as the central processing unit, plays a crucial control role.

[0004] The Chamfer cover has three LEDs mounted on it. The six leads of these LEDs are relatively soft, resulting in low positional accuracy. Therefore, accurately inserting the Chamfer cover onto the PCB is quite difficult. Problems include lead deformation during insertion, incomplete insertion, PCB damage, and lack of automated detection after insertion. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a middle cover assembly device, thereby solving the above-mentioned technical defects.

[0006] The objective of this utility model is achieved through the following technical solution: A middle cover assembly device, comprising: The assembly line unit comprises a conveyor belt unit, a transfer and pressing unit, and a lifting and detection unit. The conveyor belt unit feeds the workpiece plate containing the workpiece into a designated position inside the assembly device. The transfer and pressing unit is used to straighten the external middle cover and pick it up onto the corresponding workpiece for assembly. The lifting and detection unit is used to detect whether the middle cover pins are inserted into the PCB board in place, thereby determining whether the assembly is qualified.

[0007] In one or more embodiments of this utility model, the production line unit includes a conveyor frame, on which two opposing double-speed chains are sleeved. A three-phase asynchronous motor is fixed to the outside of the conveyor frame. The output end of the conveyor frame is used to synchronously drive the double-speed chains. The workpiece plate is slidably disposed inside the conveyor frame, and the double-speed chains are movably connected to the workpiece plate. Several sets of fixing components are fixed on the workpiece plate, and the fixing components are used to place the PCB board.

[0008] In one or more embodiments of this utility model, the transplanting pressing unit includes two sets of horizontally arranged electric cylinders. A longitudinal electric cylinder is fixed to the output end of the horizontal electric cylinder, and a vertical rod is fixed to the output end of the longitudinal electric cylinder. A fixing plate is fixed to the lower side of the vertical rod, and two vertically arranged first lifting electric cylinders are fixed to the inner side of the fixing plate. The two first lifting electric cylinders are located on both sides of the vertical rod. A lifting plate is fixed to the lower side of the output end of the first lifting electric cylinder, and a gripper cylinder is fixed to the lower side of the lifting plate. The gripper cylinder is used to grip the middle cover.

[0009] In one or more embodiments of this utility model, the upper and lower ends of the lifting plate are provided with a correction component. The correction component includes three first bushings that pass through the lifting plate. A vertical shaft is slidably disposed inside the first bushing. A limit plate is fixed to the upper end of the vertical shaft, and an orthopedic fixture is fixed to the lower end of the vertical shaft. The orthopedic fixture is located on the lower side of the lifting plate and sleeved on the outside of the gripper cylinder. The limit plate is located on the upper side of the lifting plate. A spring is sleeved on the vertical shaft. The upper end of the spring abuts against the lower side of the lifting plate, and the lower end of the spring abuts against the upper end of the orthopedic fixture.

[0010] In one or more embodiments of this utility model, two round rods are fixed on the lifting plate, a top plate is fixed on the round rods, a limit cylinder is fixed on the top plate, the output end of the limit cylinder passes through the top plate and is fixed with a limit post, the upper side of the limit plate is in movable contact with the bottom end of the limit post; a stop post is also screwed and fixed in the middle of the limit plate, a stop seat is fixed in the middle of the upper side of the lifting plate, the lower end of the stop post is in movable contact with the stop seat, and the upper end of the stop post is in movable contact with the lower end of the lifting plate.

[0011] In one or more embodiments of this utility model, the orthopedic fixture is an integrally formed structure. The orthopedic fixture includes a ring, and three orthopedic blocks are fixed on the lower side of the ring. Two vertically arranged orthopedic grooves are opened on the inner side of the orthopedic blocks. The lower end of the orthopedic groove forms a trumpet-shaped opening groove. The orthopedic groove is adapted to the pins on the middle cover.

[0012] In one or more embodiments of this utility model, a vertically arranged second lifting electric cylinder is fixed to the outer side of the fixing plate, a lifting seat is fixed to the output end of the second lifting electric cylinder, a plurality of connecting vacuum rods are fixed on the lifting seat, and a vacuum suction cup is installed on the lower side of the connecting vacuum rods. The vacuum suction cup is used to pick up the PCB board.

[0013] In one or more embodiments of this utility model, the lifting detection unit includes a mounting base, within which four second bushings arranged in a rectangular array are fixed. A first lifting shaft is slidably disposed within each of the second bushings. A lifting plate is fixed to the upper end of the first lifting shaft. A lifting cylinder is also fixed to the center of the mounting base. The output end of the lifting cylinder extends upward and is fixed to the middle of the bottom side of the lifting plate. A suspended plate is fixed to the lower side of the lifting plate by several connecting rods. Six cylinder plates arranged in a rectangular array are fixed to the upper side of the suspended plate. Four third bushings arranged in a rectangular array are installed through the cylinder plates. The third bushings also penetrate the suspended plate. A second lifting shaft is slidably disposed within each of the third bushings. A square plate is fixed to the lower side of the second lifting shaft. A surrounding plate is fixed to the second lifting shaft. A lifting cylinder is fixed to the cylinder plate. The output end of the lifting cylinder passes through the suspended plate and the cylinder plate and is connected to the square plate. The surrounding plate surrounds the outside of the lifting cylinder. A pin detection component is disposed on the surrounding plate.

[0014] In one or more embodiments of this utility model, the pin detection assembly includes a detection column fixed to the enclosure plate. The detection column has a mounting groove, and two detection plates are hinged in the mounting groove. The upper end of the detection plate makes movable contact with the pin of the middle cover. A photoelectric sensor is also installed in the middle of the detection column. When the detection plate contacts the pin of the middle cover, the lower end of the detection plate rotates to the detection end of the photoelectric sensor.

[0015] In one or more embodiments of this utility model, four columns are fixed to the inner edge of the mounting base, a mounting top plate is fixed on the columns, and a blocking cylinder is fixed inside the mounting top plate. The output end of the blocking cylinder is used to limit and block the workpiece plate on the production line unit.

[0016] The beneficial effects of this utility model are: This invention utilizes a corrective fixture (including a corrective groove for the pin and a horn-shaped guide structure) in the transplanting and pressing unit to precisely correct soft pins, preventing deformation of the pins due to positional deviations during gripping and insertion. Simultaneously, the precise drive of the first lifting electric cylinder and the auxiliary fixation of the PCB board by the vacuum suction cup ensure that the pins of the middle cover are stably and accurately inserted into the corresponding holes on the PCB board, preventing damage to the PCB board due to improper insertion force or positional deviation, and avoiding situations where the pins are not fully inserted. Furthermore, the lifting detection unit, through the cooperation of elastic detection plates and photoelectric sensors, can automatically detect whether the pins are inserted correctly after assembly, replacing manual judgment and realizing automated verification of assembly quality, significantly improving detection efficiency and accuracy. Combined with the automatic conveying of the production line unit, the continuous feeding of the A / B track buffer unit, and the automatic sorting of defective products by the NG rejection unit, the entire device realizes full-process automation of the assembly of the smoke alarm cover and PCB board. It effectively meets the needs of modern home fire prevention for efficient and high-quality production of smoke alarms, avoids the abnormal function of the smoke alarm circuit board (as the "brain" of the equipment) due to defects in manual assembly, ensures that the smoke alarm can accurately detect smoke and trigger the alarm in the early stage of a home fire, reduce the loss of life and property caused by equipment failure in home fires, and significantly improve the production efficiency of smoke alarms, reduce labor costs and defect rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the device after the frame has been removed; Figure 3 This is a structural diagram showing the cooperation between the lifting and detection unit and the workpiece plate containing the workpiece. Figure 4 yes Figure 3 A schematic diagram of the structure after removing the mounting base and the workpiece plate containing the workpiece; Figure 5 yes Figure 4 A schematic diagram of the structure after removing the lifting plate; Figure 6 This is a structural schematic diagram of the transplanting and pressing unit; Figure 7 yes Figure 6 Enlarged view of point A in the image; Figure 8 This is a schematic diagram of the gripping end of the transplanting pressing unit; Figure 9 This is a schematic diagram of the structure of an orthopedic device. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] In this embodiment, as Figures 1 to 9 As shown, this device includes a production line unit, a transfer and pressing unit, and a lifting and detection unit. It is also equipped with a platform control unit, a transfer unit, an A / B rail buffer unit, and an NG rejection unit. Each unit forms a complete assembly system through mechanical connection and electrical signal interaction. The platform control unit provides the installation foundation and safety protection for the overall device. The other units work together to complete the functions of workpiece conveying, middle cover transfer, correction assembly, and detection and sorting.

[0020] The production line unit is used to transport workpieces containing PCB boards. It includes a conveyor frame 2, which is a frame structure formed by splicing metal profiles. The bottom of the frame is equipped with leveling pads to ensure smooth transport. A set of double-speed chains is mounted on each of the two parallel side beams of the conveyor frame 2. The two sets of double-speed chains are arranged opposite each other and have the same transmission direction. A three-phase asynchronous motor 3 is fixed to the outer wall of the conveyor frame 2 by bolts. The output shaft of the three-phase asynchronous motor 3 is connected to a reducer through a coupling. The output end of the reducer is connected to the drive wheel of the double-speed chain through a chain to achieve synchronous drive of the double-speed chain.

[0021] The workpiece plate 1 is a rectangular metal plate, with its two sides fixed to the chain plates of two sets of double-speed chains via buckles or bolts. It slides along the length of the conveyor frame 2 as the double-speed chains rotate. Several sets of fixing components are fixed to the upper surface of the workpiece plate 1 by screws. The number of fixing components matches the number of PCB boards to be assembled. Each fixing component includes two positioning pins and one elastic pressure plate. The positioning pins correspond to the positioning holes on the PCB board to achieve precise positioning of the PCB board. One end of the elastic pressure plate is fixed to the workpiece plate 1, and the other end elastically presses against the upper surface of the PCB board to prevent the PCB board from shifting during transport. The fixing components are fixed platforms, and the PCB boards are placed and fixed on these platforms.

[0022] The transfer pressing unit is used to grip the middle cover and straighten the pins, while assembling the middle cover onto the PCB board. It includes a lateral movement mechanism, a longitudinal movement mechanism, a lifting gripping mechanism, and a straightening assembly. Lateral and longitudinal movement mechanism: Two sets of lateral electric cylinders 4 are symmetrically fixed to the frame beam of the control unit via mounting bases. The sliders of the lateral electric cylinders 4 move horizontally. A longitudinal electric cylinder 5 is fixed to the slider of each set of lateral electric cylinders 4 by bolts. The slider of the longitudinal electric cylinder 5 moves horizontally longitudinally, and the axis of the longitudinal electric cylinder 5 is perpendicular to the axis of the lateral electric cylinder 4. A vertical rod 6 is fixed to the slider of the longitudinal electric cylinder 5 via a flange. The vertical rod 6 is a cylindrical metal rod with its axis pointing vertically downward.

[0023] Lifting and gripping mechanism: The lower end of the vertical rod 6 is fixed with a fixing plate 7 by bolts. The fixing plate 7 is a rectangular metal plate with its surface set horizontally. On the inner side of the fixing plate 7 (the side closest to the vertical rod 6), two first lifting electric cylinders 8 are fixed with screws. The two first lifting electric cylinders 8 are located on both sides of the vertical rod 6, and their output shafts are vertically downward. The output shaft ends of the first lifting electric cylinders 8 are fixed with a lifting plate 9 by bolts. The lifting plate 9 is a rectangular metal plate parallel to the fixing plate 7. At the center of the lower surface of the lifting plate 9, a gripper cylinder 10 is fixed with screws. The inner sides of the two grippers of the gripper cylinder 10 are provided with arc-shaped grooves that fit the outer periphery of the middle cover. The inner wall of the groove is pasted with anti-slip rubber pads to ensure stability when gripping the middle cover.

[0024] Correction Components: The lifting plate 9 has three through-holes, which are distributed in an equilateral triangle on the outside of the gripper cylinder 10. A first bushing 11 is fixed in each bushing 11 by interference fit. A vertical shaft 12 slides through the first bushing 11. The upper end of the vertical shaft 12 is fixed with a limit plate 13 by a nut (the diameter of the limit plate 13 is larger than the inner diameter of the first bushing 11 to prevent the vertical shaft 12 from coming out of the lower end of the first bushing 11). The lower end of the vertical shaft 12 is fixed with a corrective fixture 14 by screws. The corrective fixture 14 is located below the lifting plate 9 and is sleeved on the outside of the gripper cylinder 10. A spring 15 is also sleeved on the vertical shaft 12. The upper end of the spring 15 abuts against the lower surface of the lifting plate 9 and the lower end abuts against the upper surface of the corrective fixture 14, so that the corrective fixture 14 has elastic buffering capacity.

[0025] Limit adjustment structure: Two round rods 16 are fixed to the upper surface of the lifting plate 9 by screws. The two round rods 16 are symmetrically distributed on both sides of the gripper cylinder 10, and their axes are vertically upward. A top plate 17, which is a rectangular metal plate, is fixed to the upper end of the round rods 16 by screws. A limit cylinder 18 is fixed to the center of the upper surface of the top plate 17 by screws. The output shaft of the limit cylinder 18 penetrates the top plate 17 vertically downward, and a limit post 19 is fixed to the end of the output shaft by screws. The lower end of the limit post 19 is in movable contact with the upper surface of the limit plate 13. The limit cylinder 18 is adjusted by screws. The telescopic adjustment limit plate 13 of cylinder 18 adjusts the vertical position, thereby controlling the maximum descent stroke of orthopedic fixture 14; a stop post 20 is screwed to the center of the limit plate 13. The stop post 20 is an externally threaded cylindrical structure. A stop seat 21 is fixed to the upper surface of the lifting plate 9 with screws corresponding to the position of the stop post 20. The upper surface of the stop seat 21 has a threaded hole that matches the stop post 20. The lower end of the stop post 20 is screwed into the threaded hole of the stop seat 21. By rotating the stop post 20, the distance between the limit plate 13 and the lifting plate 9 can be finely adjusted, thereby adjusting the initial compression of the spring 15.

[0026] The orthopedic fixture 14 is a one-piece metal structure, including a ring 141 and three orthopedic blocks 142. The inner diameter of the ring 141 is larger than the outer diameter of the gripper cylinder 10. It is fitted on the outside of the gripper cylinder 10 and fixedly connected to the vertical shaft 12. The three orthopedic blocks 142 are evenly distributed on the lower surface of the ring 141 and extend inward along the radial direction of the ring 141. Two vertical orthopedic grooves 143 are opened on the inner sidewall of each orthopedic block 142. The cross-sectional dimensions of the orthopedic grooves 143 are adapted to the cross-sectional dimensions of the middle cover pins. The lower opening of the orthopedic grooves 143 is machined into a trumpet-shaped guide structure to facilitate the smooth entry of the middle cover pins into the orthopedic grooves 143 and realize the correction of the pins.

[0027] The outer side of the fixing plate 7 (the side away from the vertical rod 6) is fixed with screws to a second lifting electric cylinder 22, the output shaft of the second lifting electric cylinder 22 is vertically downward; the end of the output shaft of the second lifting electric cylinder 22 is fixed with bolts to a lifting seat 23, the lower surface of the lifting seat 23 is fixed with screws to multiple sets of connecting vacuum rods, the lower end of each set of connecting vacuum rods is installed with a vacuum suction cup 24 through a threaded joint, the vacuum suction cup 24 is connected to an external vacuum system through an air pipe, and the negative pressure adsorbs the upper surface of the PCB board, and the vacuum suction cup 24 picks up the unassembled and unqualified products and puts them onto the NG rejection unit.

[0028] The lifting and detection unit is used to lift the assembled workpiece and detect whether the pins of the middle cover are inserted in place. It includes a lifting mechanism, a detection drive mechanism, and a pin detection assembly. Lifting Mechanism: The mounting base 25 is a rectangular metal frame, which is fixed to the bottom of the frame of the platform control unit by bolts; a second bushing 26 is fixed to each of the four corners of the mounting base 25 by screws, and the four second bushings 26 are distributed in a rectangular array with their axes vertically upward; a first lifting shaft 27 is slidably inserted in each second bushing 26, and a lifting plate 28 (a rectangular metal plate with its upper surface adapted to the lower surface of the workpiece plate 1) is fixed to the upper end of the first lifting shaft 27 by bolts; a lifting cylinder 29 is fixed to the center of the mounting base 25 by screws, the output shaft of the lifting cylinder 29 is vertically upward, and the end of the output shaft is fixed to the center of the lower surface of the lifting plate 28 by bolts. The lifting plate 28 is moved up and down along the second bushings 26 by the extension and retraction of the lifting cylinder 29, thereby lifting and lowering the workpiece plate 1.

[0029] A suspended plate 30 is fixed to the lower surface of the lifting plate 28 by several connecting rods. The connecting rods are evenly distributed at the edge of the lifting plate 28, so that the suspended plate 30 is parallel to the lifting plate 28 and spaced apart. Six cylinder plates 31 are fixed to the upper surface of the suspended plate 30 by screws. The six cylinder plates 31 are arranged in a rectangular array and correspond to the positions of the fixing components on the workpiece plate 1. Each cylinder plate 31 has four mounting holes arranged in a rectangular array. A third bushing is fixed in each mounting hole by interference fit (the third bushing also passes through the suspended plate 30). A second lifting shaft 32 slides through the third bushing. The lower end of the second lifting shaft 32 is fixed with a square plate 33 by bolts. The middle part of the second lifting shaft 32 is fixed with a surrounding plate 34 by screws. The surrounding plate 34 is a rectangular plate with a notch on one side. The lifting cylinder 35 is located in the notch and is sleeved on the outside of the lifting cylinder 35. The center of the upper surface of the cylinder plate 31 is fixed with the lifting cylinder 35 by screws. The output shaft of the lifting cylinder 35 extends vertically upward through the cylinder plate 31 and the suspension plate 30. The end of the output shaft is fixed with bolts to the lower surface of the square plate 33. The extension and retraction of the lifting cylinder 35 drives the second lifting shaft 32 to move up and down along the third bushing, thereby driving the surrounding plate 34 and the pin detection assembly to rise and fall.

[0030] Pin detection assembly: A detection post 36, a long strip of metal, is fixed to the upper outer wall of the enclosure 34 by screws. The detection post 36 has an internal mounting groove, within which two detection plates 37 are hinged by a pin. The two detection plates 37 are symmetrically distributed and can rotate around the pin. The detection plates 37 are elastic metal sheets, with their upper ends extending outwards from the detection post 36 to contact the pins of the middle cover, and their lower ends located inside the detection post 36. A photoelectric sensor 38 is mounted on the middle side wall of the detection post 36 by screws, with the detection end of the photoelectric sensor 38 facing inwards from the detection post 36. When the upper end of the detection plate 37 contacts the pin of the middle cover, the detection plate 37 rotates around the pin, and its lower end rotates to the detection end of the photoelectric sensor 38, triggering the photoelectric sensor 38 to emit a detection signal, indicating that the pin is inserted correctly. If the pin is not inserted correctly, the detection plate 37 does not rotate, the photoelectric sensor 38 has no signal output, and the assembly is deemed unqualified.

[0031] A column 39 is fixed to each of the four edges of the mounting base 25 by screws. A mounting top plate 40, adapted to the mounting base 25, is bolted to the upper end of each column 39. The upper surface of the mounting top plate 40 corresponds to the conveying path of the workpiece plate 1, and a blocking cylinder 41 is fixed thereby by screws. The output shaft of the blocking cylinder 41 extends vertically downwards through the mounting top plate 40. When the workpiece plate 1 is conveyed to the designated assembly position, the output shaft of the blocking cylinder 41 extends and abuts against the front end face of the workpiece plate 1, thus limiting and positioning the workpiece plate 1 and preventing over-conveying. The conveyor frame 2 is also equipped with a blocking cylinder for limiting the workpiece plate 1.

[0032] The platform control unit includes a frame, a safety enclosure, and an electrical control box. The frame is a steel structure frame used to fix functional units such as the production line unit, the transplanting and pressing unit, and the lifting and detection unit. The safety enclosure is made of transparent acrylic panels and covers the outside of the frame. One side of the safety enclosure has an openable safety door, and safety light curtains are installed on the edge of the safety enclosure. When the safety door is opened or an object is inserted into the device, the equipment automatically stops to ensure operational safety. The electrical control box is fixed to one side of the frame and contains electrical components such as a PLC controller, servo driver, and relays. It is connected to the motors, cylinders, and sensors of each unit through wires to realize the automated control of the equipment.

[0033] Transplanting unit: A four-axis robot arm is used. The end effector of the robot arm is equipped with a gripper or a vacuum suction cup. The position of the middle cover in the docking equipment is identified by a vision positioning system. After the robot arm moves to the position of the middle cover, it grabs the middle cover by gripping it with the gripper or suction cup and then transfers the middle cover to the positioning fixture of the A / B track buffer unit.

[0034] A / B Track Buffer Unit: Includes two parallel conveying tracks, each track has a rodless cylinder and a positioning fixture. The slider of the rodless cylinder is fixedly connected to the positioning fixture, driving the positioning fixture to move along the track. After the transfer unit places the middle cover on the positioning fixture, the rodless cylinder drives the positioning fixture to a position that the transfer pressing unit can grasp. When the positioning fixture of one track is feeding material, the positioning fixture of the other track can receive the middle cover conveyed by the transfer unit, realizing continuous buffer supply of the middle cover and improving assembly efficiency.

[0035] NG Removal Unit: Includes a miniature conveyor line and two photoelectric sensors. The input end of the conveyor line is located within the working range of the transfer pressing unit, and the output end extends to the outside of the equipment. The two photoelectric sensors are respectively installed at the input and output ends of the conveyor line. The photoelectric sensor at the input end is used to detect whether there are any defective products being placed in, and the photoelectric sensor at the output end is used to detect whether the conveyor line is full of defective products. When the lifting detection unit determines that the product assembly is defective, the vacuum suction cup 24 of the transfer unit grabs the defective product and places it at the input end of the conveyor line. The conveyor line starts to transport the defective product to the output end. When the photoelectric sensor at the output end detects a product, it determines that the conveyor line is full, and the equipment issues a warning signal to remind the operator to remove the defective product.

[0036] Working principle of this utility model: The operator places the PCB board on the fixing component of the workpiece plate 1. The positioning pin and the elastic pressure plate realize the positioning and fixing of the PCB board. The three-phase asynchronous motor 3 starts and drives the double speed chain to move the workpiece plate 1 along the conveyor frame 2 into the device. When the workpiece plate 1 moves to the designated assembly position, the output shaft of the blocking cylinder 41 extends and abuts against the workpiece plate 1 to realize positioning, and the double speed chain stops running. The transplanting unit uses visual positioning to grasp the middle cover in the docking device and places the middle cover on the positioning fixture of the A / B rail buffer unit; the rodless cylinder drives the positioning fixture to move to the grasping position of the transplanting pressing unit, waiting to be grasped; The transverse electric cylinder 4 and the longitudinal electric cylinder 5 work together to drive the gripper cylinder 10 to move above the positioning fixture of the A / B rail buffer unit; the first lifting electric cylinder 8 drives the lifting plate 9 to descend, and the gripper cylinder 10 closes to grip the middle cover; at the same time, the orthopedic fixture 14 descends with the lifting plate 9, and the pins of the middle cover enter the orthopedic groove 143 under the guidance of the flared guide groove. The spring 15 provides elastic pressure, so that the orthopedic groove 143 corrects the pins and eliminates the bending deformation of the pins; The horizontal electric cylinder 4 and the vertical electric cylinder 5 work together again to move the corrected middle cover to the top of the PCB board on the workpiece material plate 1; the second lifting electric cylinder 22 drives the vacuum suction cup 24 to descend, and the vacuum suction cup 24 adsorbs the upper surface of the PCB board to achieve auxiliary fixation; the first lifting electric cylinder 8 continues to drive the lifting plate 9 to descend, inserting the pins of the middle cover into the corresponding holes of the PCB board to complete the assembly. The lifting cylinder 29 is activated, driving the lifting plate 28 to rise, which in turn drives the workpiece plate 1 and the assembled product to rise synchronously to the detection position; the lifting cylinder 35 is activated, driving the detection column 36 to rise, so that the upper end of the detection piece 37 contacts the pin of the middle cover; if the pin is inserted in place, the detection piece 37 rotates and triggers the photoelectric sensor 38, and the equipment determines that the product is qualified; if the pin is not inserted in place, the photoelectric sensor 38 has no signal, and the equipment determines that the product is unqualified. After the inspection is completed, the lifting cylinder 29 drives the lifting plate 28 to fall back, and the workpiece plate 1 is placed back into the conveyor frame 2. If the product is qualified, the output shaft of the blocking cylinder 41 is retracted, and the double-speed chain starts to transport the workpiece plate 1 to the next process. If the product is unqualified, the vacuum suction cup 24 of the transfer unit grabs the unqualified product and places it on the conveyor line of the NG rejection unit. The conveyor line transports the unqualified product to the output end for storage, waiting for the operator to pick it up.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A middle cover assembly device, characterized in that, include: The assembly line unit, the transfer pressing unit, and the lifting detection unit are used to send the workpiece plate (1) containing the workpiece into the designated position inside the assembly device; the transfer pressing unit is used to correct the external middle cover and grab it onto the corresponding workpiece for assembly; the lifting detection unit is used to detect whether the middle cover pin is inserted into the PCB board in place, thereby determining whether the assembly is qualified.

2. The middle cover assembly device according to claim 1, characterized in that: The line unit includes a conveyor frame (2), on which two opposing double-speed chains are mounted. A three-phase asynchronous motor (3) is fixed on the outside of the conveyor frame (2). The output end of the conveyor frame (2) is used to synchronously drive the double-speed chains. The workpiece plate (1) is slidably mounted inside the conveyor frame (2). The double-speed chains are connected and fixed to the workpiece plate (1). Several sets of fixing components are fixed on the workpiece plate (1). The fixing components are used to place PCB boards.

3. The middle cover assembly device according to claim 1, characterized in that: The transplanting pressing unit includes two sets of horizontally arranged electric cylinders (4). A longitudinal electric cylinder (5) is fixed on the output end of the horizontal electric cylinder (4). A vertical rod (6) is fixed on the output end of the longitudinal electric cylinder (5). A fixing plate (7) is fixed on the lower side of the vertical rod (6). Two vertically arranged first lifting electric cylinders (8) are fixed on the inner side of the fixing plate (7). The two first lifting electric cylinders (8) are located on both sides of the vertical rod (6). A lifting plate (9) is fixed on the lower side of the output end of the first lifting electric cylinder (8). A gripper cylinder (10) is fixed on the lower side of the lifting plate (9). The gripper cylinder (10) is used to grip the middle cover.

4. The middle cover assembly device according to claim 3, characterized in that: The upper and lower ends of the lifting plate (9) are provided with correction components. The correction components include three first bushings (11) that pass through the lifting plate (9). A vertical shaft (12) is slidably arranged inside the first bushing (11). A limit plate (13) is fixed on the upper end of the vertical shaft (12). An orthotic fixture (14) is fixed on the lower end of the vertical shaft (12). The orthotic fixture (14) is located on the lower side of the lifting plate (9) and sleeved on the outside of the gripper cylinder (10). The limit plate (13) is located on the upper side of the lifting plate (9). A spring (15) is sleeved on the vertical shaft (12). The upper end of the spring (15) abuts against the lower side of the lifting plate (9), and the lower end of the spring (15) abuts against the upper end of the orthotic fixture (14).

5. The middle cover assembly device according to claim 4, characterized in that: Two round rods (16) are fixed on the lifting plate (9). A top plate (17) is fixed on the round rods (16). A limit cylinder (18) is fixed on the top plate (17). The output end of the limit cylinder (18) passes through the top plate (17) and is fixed with a limit post (19). The upper side of the limit plate (13) is in contact with the bottom end of the limit post (19). A stop post (20) is also screwed and fixed in the middle of the limit plate (13). A stop seat (21) is fixed in the middle of the upper side of the lifting plate (9). The lower end of the stop post (20) is in contact with the stop seat (21). The upper end of the stop post (20) is in contact with the lower end of the lifting plate (9).

6. The middle cover assembly device according to claim 4, characterized in that: The orthopedic fixture (14) is an integrally formed structure. The orthopedic fixture (14) includes a ring (141). Three orthopedic blocks (142) are fixed on the lower side of the ring (141). Two vertically arranged orthopedic grooves (143) are opened on the inner side of the orthopedic blocks (142). The lower end of the orthopedic groove (143) forms a trumpet-shaped opening groove. The orthopedic groove (143) is adapted to the pins on the middle cover.

7. The middle cover assembly device according to claim 3, characterized in that: A vertically arranged second lifting electric cylinder (22) is fixed on the outside of the fixed plate (7). A lifting seat (23) is fixed at the output end of the second lifting electric cylinder (22). Multiple sets of connecting vacuum rods are fixed on the lifting seat (23). A vacuum suction cup (24) is installed on the lower side of the connecting vacuum rod. The vacuum suction cup (24) is used to pick up the PCB board.

8. The middle cover assembly device according to claim 1, characterized in that: The lifting detection unit includes a mounting base (25), inside which are fixed four second bushings (26) arranged in a rectangular array. A first lifting shaft (27) is slidably disposed within each second bushing. A lifting plate (28) is fixed to the upper end of the first lifting shaft (27). A lifting cylinder (29) is also fixed to the center inside the mounting base (25). The output end of the lifting cylinder (29) extends upward and is fixed to the middle of the bottom side of the lifting plate (28). A suspension plate (30) is fixed to the lower side of the lifting plate (28) via several connecting rods. Six cylinder plates (31) arranged in a rectangular array are fixed to the upper side of the suspension plate (30). Four third bushings arranged in a rectangular array are installed through the cylinder plate (31). The third bushings also pass through the suspension plate (30). A second lifting shaft (32) is slidably arranged inside the third bushing. A square plate (33) is fixed to the lower side of the second lifting shaft (32). A surrounding plate (34) is fixed on the second lifting shaft (32). A lifting cylinder (35) is fixed on the cylinder plate (31). The output end of the lifting cylinder (35) passes through the suspension plate (30) and the cylinder plate (31) and is connected to the square plate (33). The surrounding plate (34) surrounds the outside of the lifting cylinder (35). A pin detection component is provided on the surrounding plate (34).

9. A middle cover assembly device according to claim 8, characterized in that: The pin detection assembly includes a detection post (36) fixed on the enclosure plate (34). The detection post (36) has an installation groove, and two detection pieces (37) are hinged in the installation groove. The upper end of the detection piece (37) makes movable contact with the pin of the middle cover. A photoelectric sensor (38) is also installed in the middle of the detection post (36). When the detection piece (37) contacts the pin of the middle cover, the lower end of the detection piece (37) rotates to the detection end of the photoelectric sensor (38).

10. A middle cover assembly device according to claim 8, characterized in that: The mounting base (25) is also fixed with four columns (39) on its inner edge. A mounting top plate (40) is fixed on the columns (39). A blocking cylinder (41) is fixed inside the mounting top plate (40). The output end of the blocking cylinder (41) is used to limit and block the workpiece plate (1) on the line unit.

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