A base cover assembly device for a smoke alarm

Abstract

The utility model discloses a bottom cover assembly device for smoke alarm, including bottom cover feeding unit, bottom cover feeding unit includes spring clip feeding mechanism and feeding conveying line, and the bottom cover falls into feeding conveying line in proper order through spring clip feeding mechanism, and flows into the specified position through feeding conveying line, the bottom cover reaches the bottom cover of predetermined position on feeding conveying line through first manipulator and is clamped to the clamp on annular conveying line, and the bottom cover carries out annular conveying in annular conveying line to carry out assembly process, iron sheet installation unit, iron sheet installation unit is used to install the iron sheet in the iron sheet of bottom cover and places the slot, the utility model discloses compact structure, and the layout is reasonable, and each function module coordinates operation, not only has improved production efficiency greatly, has reduced manual cost, and through accurate positioning and control mechanism has improved product consistency and reliability significantly.

Description

Technical Field

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

[0002] In the manufacturing process of smoke detectors, the assembly of the base cover is a crucial production step, involving automatic feeding, precise positioning, and accurate installation of components such as metal plates. Traditional production methods rely heavily on manual operation. Workers manually remove the base cover from the tray and place it on a fixture, then manually or with simple tools install the metal plates into their designated slots. This manual method is not only inefficient and unable to meet the pace requirements of modern production, but also prone to problems such as scratches on the base cover, misalignment of the metal plates, and poor contact due to human error, directly affecting product quality and consistency.

[0003] With the development of automation technology, semi-automated assembly equipment has emerged in the industry. These devices typically use vibratory feeders for material feeding combined with robotic arms for picking and placing, reducing manual labor intensity to some extent. However, existing equipment still has significant shortcomings in the continuous feeding stage of the bottom cover: on the one hand, traditional feeding mechanisms are prone to jamming and overlapping during bottom cover separation, leading to production interruptions; on the other hand, the positioning accuracy of the bottom cover during transport is insufficient, affecting the accuracy of subsequent robotic arm gripping. Especially in the iron sheet installation stage, due to the thinness and small size of the iron sheets, and the need for precise insertion into the narrow slots of the bottom cover, the existing single-insertion method easily causes the iron sheets to bend, shift, or even be damaged, resulting in a high product defect rate. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a bottom cover assembly device for smoke alarms, thereby solving the above-mentioned defects.

[0005] The objective of this utility model is achieved through the following technical solution: A bottom cover assembly device for a smoke alarm, comprising: The bottom cover feeding unit includes a clip feeding mechanism and a feeding conveyor line. The bottom cover is sequentially fed into the feeding conveyor line through the clip feeding mechanism and flows into a designated position through the feeding conveyor line. In a circular conveyor line, the bottom cover that reaches a predetermined position on the feeding conveyor line is picked up by a first robotic arm and placed onto a fixture on the circular conveyor line. The bottom cover is then conveyed in a circular manner on the circular conveyor line for assembly. A sheet mounting unit is used to mount a sheet in the sheet placement groove of the bottom cover.

[0006] In one or more embodiments of this utility model, the bottom cover feeding unit includes a base, on which a plurality of columns are fixed in a uniform array, and a fixing seat is fixed on the inner side of each column. The feeding conveyor line is fixed between the fixing seats, and a first top plate is fixed to the top of each column. The spring clip feeding mechanism is disposed on the first top plate, and a plurality of first material holes are opened on the first top plate. The discharge port at the lower end of the spring clip feeding mechanism corresponds to the corresponding first material hole so that the bottom cover falls onto the feeding conveyor line. The output end of the feeding conveyor line extends to the outside of the base.

[0007] In one or more embodiments of this utility model, a plurality of cylindrical columns arranged in a rectangular array are fixed on the first top plate, and a second top plate is fixed on the cylindrical columns; the magazine feeding mechanism includes a plurality of feeding components arranged in a single-row linear array, the feeding components are disposed on the second top plate, the second top plate has a plurality of second material holes, the second material holes are located above the first material holes, the feeding components include four material columns fixed on the second top plate, the four material columns surround the periphery of the corresponding second material holes, and a feeding cavity for placing the bottom cover is formed between the four material columns; two opposing arc-shaped blocks are fixed at the upper end of the material columns; the feeding components also include a fixing block fixed on the second top plate, and a fastening cylinder is also fixed on the second top plate, the output end of the fastening cylinder is fixed with a fastening block, the fixing block and the fastening block are opposite to each other and located on opposite sides of the second material holes; the fixing block and the fastening block clamp and fix the second base at the bottom of the feeding cavity; the first base at the bottom of the feeding cavity is located in the second material hole and is limited by a limiting component.

[0008] In one or more embodiments of this utility model, the limiting component includes a first limiting cylinder and a second limiting cylinder fixed to a first top plate. The first limiting cylinder and the second limiting cylinder are respectively located on opposite sides of the first material hole. A first limiting seat is fixed to the output end of the first limiting cylinder and the second limiting cylinder. The first limiting seat is located between the first top plate and the second top plate. When the first limiting seat is in the initial position, the base in the second material hole is limited by the first limiting seat.

[0009] In one or more embodiments of this utility model, a second limiting seat is fixed to the outer side of the output end of the feeding conveyor line. Two extension pieces are fixed to the upper end of the second limiting seat. A first limiting cylinder and a second limiting cylinder are respectively fixed to the lower side of the extension ends of the two extension pieces. The output ends of the first limiting cylinder and the second limiting cylinder face downward and are respectively fixed with two baffles. The baffles limit the output of the bottom cover on the feeding conveyor line.

[0010] In one or more embodiments of this utility model, the iron sheet mounting unit includes a first frame and a second frame. The height of the first frame is less than the height of the second frame. A circular vibrator and a linear vibrator for outputting iron sheets are fixed on the first frame. The discharge port of the circular vibrator is connected to the inlet of the linear vibrator. The discharge end of the linear vibrator extends to the second frame. A baffle assembly is provided on the second frame. The baffle assembly is used to limit and block the iron sheet from the discharge port of the linear vibrator. The baffle assembly includes a baffle seat fixed on the second frame, and a first baffle is fixed on the baffle seat. The machine includes a material cylinder and a second material blocking cylinder. The output ends of the first material blocking cylinder and the second material blocking cylinder are respectively fixed with a first stop block and a second stop block. The first stop block passes through the direct vibration output end and the corresponding iron sheet. The second stop block is located outside the direct vibration outlet to block the material. The second frame is equipped with an iron sheet clamping assembly, a staggered placement assembly, a second robot arm, and an iron sheet insertion assembly. The iron sheet clamping assembly is used to clamp the iron sheet from the direct vibration outlet end and place it on the staggered placement assembly. Then, the second robot arm clamps the iron sheet on the staggered placement assembly into the insertion slot of the iron sheet insertion assembly.

[0011] In one or more embodiments of this utility model, the iron sheet clamping assembly includes a clamping seat fixed on a second frame, a displacement cylinder fixed on the clamping seat, a connecting plate fixed to the output end of the displacement cylinder, a gripper cylinder fixed to the lower side of the extension end of the connecting plate, and a gripper for clamping the iron sheet at the output end of the gripper cylinder for clamping the iron sheet at the direct vibration outlet end; the staggered placement assembly includes a vertical plate fixed on the second frame, a linear slide table driven by a motor fixed on the vertical plate, a sliding plate fixed to the output end of the linear slide table, and two placement seats for placing iron sheets fixed on the sliding plate; by adjusting the position of the placement seats so that the opening of the placement seats corresponds to the direct vibration outlet, the iron sheet clamped by the gripper cylinder driven by the displacement cylinder is directly inserted horizontally into the placement groove of the placement seat.

[0012] In one or more embodiments of this utility model, the iron sheet insertion assembly includes a sliding cylinder and two linear slide rails fixed on a second frame, a movable plate on the slider of the sliding cylinder and the linear slide rails, two uprights fixed on the movable plate, a first insertion cylinder fixed on the uprights, an insertion plate fixed at the output end of the first insertion cylinder, a second insertion cylinder fixed on the outer side of the insertion plate, a fixed insertion block fixed on the outer side of the upper end of the insertion plate, the output end of the second insertion cylinder extending upward and fixed with a movable insertion block, a groove penetrating vertically through the fixed insertion block, the movable insertion block fitting into the groove, the upper ends of the movable insertion block and the fixed insertion block forming a slot, when the iron sheet is located in the slot, a portion of it is located on the outer side of the upper ends of the movable insertion block and the fixed insertion block; the first insertion cylinder drives the iron sheet to move upward as a whole, first inserting the exposed part of the iron sheet into the iron sheet placement slot of the bottom cover, and then the second insertion cylinder pushes the iron sheet upward as a whole, so that the iron sheet is completely inserted.

[0013] The beneficial effects of this utility model are: This device employs a coordinated system of a bottom cover feeding unit, a circular conveyor line, and an iron sheet installation unit to achieve a complete automated process from automatic bottom cover feeding and precise positioning to accurate iron sheet installation. The clip feeding mechanism, through a feeding chamber formed by the material column and a limiting component, ensures a continuous and orderly supply of the bottom cover. A cylinder at the end of the feeding conveyor line controls the baffle column, achieving precise positioning of the bottom cover and creating favorable conditions for the robotic arm to grasp it. The iron sheet installation unit, through the coordination of a circular and direct vibration feeding system, a baffle component, and a multi-station transfer mechanism, particularly the two-step insertion method used in the iron sheet insertion component—first, a first insertion cylinder pre-inserts the end of the iron sheet into the bottom cover, and then a second insertion cylinder completes the full insertion—effectively avoids deformation and displacement of the iron sheet during installation, ensuring installation quality and yield. The entire device has a compact structure, a reasonable layout, and coordinated operation of its functional modules, significantly improving production efficiency, reducing labor costs, and significantly enhancing product consistency and reliability through precise positioning and control mechanisms. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the bottom cover feeding unit; Figure 3 yes Figure 2 Enlarged view of point E in the image; Figure 4 This is a structural schematic diagram of the iron sheet mounting unit; Figure 5 This is a structural schematic diagram of the iron sheet mounting unit from another perspective; Figure 6 yes Figure 1 Enlarged view of point F in the image; Figure 7 yes Figure 5 Enlarged view of point G in the image; Figure 8 yes Figure 4 Enlarged view of point H in the image. Detailed Implementation

[0015] 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.

[0016] In this embodiment, as Figures 1 to 8 As shown, a bottom cover assembly device for a smoke alarm includes a bottom cover feeding unit A, which includes a clip feeding mechanism and a feeding conveyor line. The bottom cover is sequentially dropped onto the feeding conveyor line via the clip feeding mechanism and flows into a designated position via the feeding conveyor line. In the circular conveyor line B, the bottom cover that reaches the predetermined position on the feeding conveyor line is picked up by the first robot arm C and placed onto the fixture on the circular conveyor line. The bottom cover is conveyed in a circular manner on the circular conveyor line for assembly. Iron sheet mounting unit D, the iron sheet mounting unit is used to mount iron sheets in the iron sheet placement groove of the bottom cover.

[0017] The bottom cover feeding unit, the circular conveyor line, and the iron sheet installation unit work together to improve assembly efficiency and accuracy. The device has a compact structure and is suitable for automated production lines for smoke alarm bottom covers.

[0018] In one or more embodiments of this utility model, the bottom cover feeding unit includes a base 1, on which a plurality of evenly arrayed columns 2 are fixed. A fixing seat is fixed on the inner side of each column 2. The feeding conveyor line is fixed between the plurality of fixing seats. A first top plate 3 is fixed to the top of each of the columns 2. A spring clip feeding mechanism is disposed on the first top plate 3. A plurality of first material holes are opened on the first top plate 3. The discharge port at the lower end of the spring clip feeding mechanism corresponds to the corresponding first material hole so that the bottom cover falls onto the feeding conveyor line. The output end of the feeding conveyor line extends to the outer side of the base 1.

[0019] In this embodiment, the bottom cover feeding unit achieves automatic feeding and conveying of the bottom cover through the cooperation of a spring clip feeding mechanism and a feeding conveyor line. The column 2 and the first top plate 3 form a stable support structure, ensuring the reliability of the feeding process. The spring clip feeding mechanism accurately drops the bottom cover into the feeding conveyor line through the first feeding hole, achieving continuous feeding and improving production efficiency. The column 2 and the base 1 can be fixed by threaded connection (such as using anchor bolts) or welding, facilitating height adjustment. The feeding conveyor line can be a belt conveyor, roller conveyor, or vibrating conveyor, selected according to the weight and size of the bottom cover. The first top plate 3 can be made of aluminum alloy or steel and is connected to the column 2 via angle brackets; its position is adjustable. The first feeding hole can be designed as round or square to match the shape of the bottom cover, and wear-resistant bushings can be added to the edge of the hole.

[0020] In one or more embodiments of this utility model, a plurality of cylindrical columns arranged in a rectangular array are fixed on the first top plate 3, and a second top plate 4 is fixed on the cylindrical columns; the magazine feeding mechanism includes a plurality of feeding components arranged in a single-row linear array, the feeding components being disposed on the second top plate 4, the second top plate 4 having a plurality of second material holes, the second material holes being located above the first material holes, the feeding components including four material columns 5 fixed on the second top plate 4, the four material columns 5 surrounding the periphery of the corresponding second material holes, the four material columns 5 being spaced apart. A feeding cavity for placing the bottom cover is formed; two opposing arc-shaped blocks 6 are fixed to the upper end of the material column 5; the feeding assembly also includes a fixing block 7 fixed to the second top plate 4, and a fastening cylinder 8 is also fixed to the second top plate 4. The output end of the fastening cylinder 8 is fixed with a fastening block. The fixing block 7 and the fastening block are opposite to each other and located on opposite sides of the second material hole; the second base at the bottom of the feeding cavity is clamped and fixed by the fixing block 7 and the fastening block; the first base at the bottom of the feeding cavity is located in the second material hole and is limited by a limiting assembly.

[0021] In this embodiment, the magazine feeding mechanism forms vertically arranged feeding cavities through the material columns 5, enabling the stacking and storage of bottom covers. The arc-shaped block 6 facilitates the introduction of bottom covers, and the cooperation of the fixing block 7 and the fastening cylinder 8 ensures that the bottom covers are fed one by one, avoiding jamming. This design achieves orderly supply of bottom covers, ensuring the continuity and stability of the feeding process. The material columns 5 can be fixed to the second top plate 4 by threaded connection or pin, facilitating disassembly and replacement. The fastening cylinder 8 can be replaced by an electric push rod or a linear motor, with the clamping force controlled by a PLC. The arc-shaped block 6 can be made of engineering plastic or stainless steel and fixed with bolts to reduce scratches on the bottom covers. The cross-section of the feeding cavity can be designed as circular or rectangular to accommodate bottom covers of different shapes.

[0022] In one or more embodiments of this utility model, the limiting component includes a first limiting cylinder 9 and a second limiting cylinder 10 fixed on the first top plate 3. The first limiting cylinder 9 and the second limiting cylinder 10 are respectively located on opposite sides of the first material hole. The output ends of the first limiting cylinder 9 and the second limiting cylinder 10 are fixed with a first limiting seat 11. The first limiting seat 11 is located between the first top plate 3 and the second top plate 4. When the first limiting seat 11 is in the initial position, the base in the second material hole is limited by the first limiting seat 11.

[0023] In this embodiment, the limiting component drives the first limiting seat 11 to move via the first limiting cylinder 9 and the second limiting cylinder 10, controlling the timing of the bottom cover's descent. When the first limiting seat 11 extends, it blocks the bottom cover from falling; when it retracts, it allows the bottom cover to fall into the feeding conveyor line. This precise control avoids chaotic descent of the bottom cover and ensures that the feeding rhythm is synchronized with the production line. The first limiting cylinder 9 and the second limiting cylinder 10 can be replaced by electromagnet-driven stop pins or rotating baffles. The first limiting seat 11 can be fixed to the cylinder output end via quick clamps or threaded connections for easy adjustment of the limiting position. The first limiting seat 11 can be designed as an L-shaped or wedge-shaped block to better fit the edge of the bottom cover. The cylinder can be equipped with a position sensor to provide real-time feedback on the limiting status.

[0024] In one or more embodiments of this utility model, a second limiting seat 12 is fixed to the outer side of the output end of the feeding conveyor line. Two extension pieces are fixed to the upper end of the second limiting seat 12. A first limiting cylinder 13 and a second limiting cylinder 14 are respectively fixed to the lower side of the extension ends of the two extension pieces. The output ends of the first limiting cylinder 13 and the second limiting cylinder 14 face downward and are respectively fixed with two baffles. The baffles limit the output of the bottom cover on the feeding conveyor line.

[0025] In this embodiment, the output-end limiting structure controls the raising and lowering of the baffle column through the first limiting cylinder 13 and the second limiting cylinder 14, enabling the release of the bottom cover one by one. This structure ensures that the bottom cover stops accurately at the designated position, facilitating the gripping of the first robotic arm and improving transfer accuracy. The baffle column can be made of stainless steel round rod or nylon column, connected to the cylinder output end by threads. The first limiting cylinder 13 and the second limiting cylinder 14 can be replaced by linear motors or servo electric cylinders to achieve more precise position control. The extension plate can be connected to the second limiting seat 12 via a hinge or slider, and its angle and length are adjustable. A photoelectric sensor can be added to detect the position of the bottom cover and control it in conjunction with the cylinder.

[0026] In one or more embodiments of this utility model, the iron sheet mounting unit includes a first frame and a second frame. The height of the first frame is less than the height of the second frame. A circular vibrator 15 and a linear vibrator for outputting iron sheets are fixed on the first frame. The discharge port of the circular vibrator 15 is connected to the inlet of the linear vibrator. The discharge end of the linear vibrator extends to the second frame. A baffle assembly is provided on the second frame. The baffle assembly is used to limit and block the iron sheet from the discharge port of the linear vibrator. The baffle assembly includes a baffle seat 16 fixed on the second frame, and a first baffle gas is fixed on the baffle seat 16. The first and second blocking cylinders 17 and 18 are respectively fixed with a first stop block and a second stop block at their output ends. The first stop block passes through the direct vibration output end and the corresponding iron sheet, and the second stop block is located outside the direct vibration outlet to block the material. The second frame is equipped with an iron sheet clamping assembly, a staggered placement assembly, a second robot arm 19 and an iron sheet insertion assembly. The iron sheet clamping assembly is used to clamp the iron sheet from the direct vibration outlet end and place it on the staggered placement assembly. Then, the second robot arm 19 clamps the iron sheet on the staggered placement assembly into the insertion slot of the iron sheet insertion assembly.

[0027] In this embodiment, the iron sheet installation unit achieves the directional arrangement and conveying of iron sheets through circular vibration 15 and linear vibration. The layered design of the first and second frames optimizes the spatial layout. The material blocking assembly ensures accurate positioning of the iron sheets at the discharge port, preparing for subsequent clamping and installation. This design achieves efficient iron sheet supply and ensures installation accuracy. The material blocking assembly achieves precise control of the iron sheets through the coordinated action of the first material blocking cylinder 17 and the second material blocking cylinder 18. The first stop block is inserted into the iron sheet hole for positioning, and the second stop block blocks subsequent iron sheets, ensuring that the iron sheets are separated individually. This design avoids iron sheet overlap or jamming, improving the reliability of material supply. The circular vibration 15 can be replaced by a vibratory feeder or a hopper, selected according to the shape and size of the iron sheets. The first and second frames can be connected by profile overlap or steel plate welding, and the level can be adjusted by anchor bolts. The linear vibration can be driven by electromagnetic or pneumatic drive, and the conveying speed is adjustable. Reinforcing ribs can be set between the frames to improve structural stability. The first and second stop blocks can be made of hard alloy or engineering plastic and are fixed to the cylinder output end with screws. The first stop cylinder 17 and the second stop cylinder 18 can be replaced by rotary cylinders or electric push rods. The stop seat 16 can be connected to the frame via T-bolts, and its position can be adjusted laterally. A fiber optic sensor can be added to detect the position of the iron sheet to achieve closed-loop control.

[0028] In one or more embodiments of this utility model, the iron sheet clamping assembly includes a clamping seat fixed on a second frame, a displacement cylinder 20 fixed on the clamping seat, a connecting plate fixed to the output end of the displacement cylinder 20, a gripper cylinder 21 fixed to the lower side of the extension end of the connecting plate, and a gripper 22 for clamping the iron sheet at the output end of the gripper cylinder 21. The staggered placement assembly includes a vertical plate fixed on the second frame, a linear slide 23 driven by a motor fixed on the vertical plate, a sliding plate fixed to the output end of the linear slide 23, and two placement seats 24 for placing iron sheets fixed on the sliding plate. By adjusting the position of the placement seats 24 so that the opening of the placement seats 24 corresponds to the direct vibration outlet, the iron sheet clamped by the gripper cylinder 21 driven by the displacement cylinder 20 is directly inserted horizontally into the placement groove of the placement seat 24.

[0029] In this embodiment, the iron sheet gripping assembly, through the cooperation of the displacement cylinder 20 and the gripper cylinder 21, achieves precise transfer of the iron sheet from the linear vibrator to the placement seat 24. The staggered placement assembly adjusts the position of the placement seat 24 via the linear slide 23, forming a buffer station to balance the production cycle. This design achieves temporary storage and positioning of the iron sheet, preparing it for subsequent installation. The displacement cylinder 20 can be replaced by a lead screw cylinder or a belt linear module to improve movement accuracy. The gripper 22 can be a pneumatic finger or an electric gripper, and polyurethane gaskets can be added to the gripping surface. The linear slide 23 can be a ball screw type or a synchronous belt type, driven by a servo motor. The placement seat 24 can be connected to the slide plate via a positioning pin for easy and quick replacement.

[0030] In one or more embodiments of this utility model, the iron sheet insertion assembly includes a sliding cylinder fixed to a second frame and two linear slide rails. A movable plate 25 is mounted on the slider of the sliding cylinder and the linear slide rails. Two uprights 26 are fixed on the movable plate 25. A first insertion cylinder 27 is fixed on each upright 26. An insertion plate 28 is fixed to the output end of the first insertion cylinder 27. A second insertion cylinder 29 is fixed to the outer side of the insertion plate 28. A fixing block 30 is fixed to the outer side of the upper end of the insertion plate 28. The output of the second insertion cylinder 29... The fixed insert 30 has a groove extending upwards and fixed to the fixed insert 30. The movable insert 31 is adapted to the groove. The upper ends of the movable insert 31 and the fixed insert 30 together form a slot. When the iron sheet is in the slot, a part of it is located outside the upper ends of the movable insert 31 and the fixed insert 30. The first insertion cylinder 27 drives the iron sheet to move upwards as a whole. First, the exposed part of the iron sheet is inserted into the iron sheet placement slot of the bottom cover. Then, the second insertion cylinder 29 pushes the iron sheet upwards as a whole, so that the iron sheet is completely inserted.

[0031] In this embodiment, the iron sheet insertion assembly is driven by two-stage cylinders, employing a two-step insertion method. In the first step, the first insertion cylinder 27 actuates, firmly positioning the iron sheet in the slot of the iron sheet insertion assembly. As the slot is lifted by the first insertion cylinder 27, the exposed 3mm end of the iron sheet is inserted into the bottom cover. Then, the second insertion cylinder 29 actuates, completely inserting the pre-inserted iron sheet into the bottom cover. This two-step insertion method ensures that the iron sheet is pre-inserted into the bottom cover in a fully positioned state, avoiding the instability and inaccurate positioning of a single insertion. The sliding cylinder can be replaced by a servo electric cylinder, with the insertion depth and speed controlled by programming. The fixed insertion block 30 and the moving insertion block 31 can be made of copper alloy or mold steel, with polished surfaces to reduce friction. The linear guide rail can be a ball bearing guide or a sliding guide rail to ensure smooth movement of the moving plate 25. The first insertion cylinder 27 and the second insertion cylinder 29 can be equipped with magnetic coupling sensors for precise stroke control.

[0032] In one or more embodiments of this utility model, the annular conveyor line includes several fixed seats arranged in an annular array. An annular frame made of profiles is fixed on the fixed seats. Four drive discs are fixed to the annular frame by bearings. A drive belt is sleeved on the outer surface of the four drive discs. Several drive blocks that follow the movement of the drive belt are fixed on the outer side of the drive belt. An annular guide rail is also fixed on the annular frame. Several sliding components are slidably arranged on the annular guide rail. The sliding components are fixedly connected to the corresponding drive blocks. A mounting plate is fixed on the sliding components. A clamp for placing a faceplate is also fixed on the mounting plate. A transport motor for driving one of the drive discs is fixed on the lower side of the annular frame.

[0033] The sliding assembly includes a sliding plate, and four pulleys are rotatably arranged on the lower side of the sliding plate. The pulleys have grooves formed on their outer surfaces, and the inner and outer sides of the annular guide rail have protrusions. The grooves of the pulleys and the protrusions are matched to make the movement of the sliding plate more stable.

[0034] Several outer upright plates are fixed to the outer side of the annular frame. A second limiting plate is fixed to the outer side of the outer upright plates via a linear slide rail. The second limiting plate is controlled by a lifting limiting cylinder. A connecting block is fixed to the outer side of the sliding plate, and a cylindrical block is fixed to the outer side of the connecting block. A slot is provided at the upper end of the second limiting plate. By engaging the slot with the cylindrical block, the sliding assembly is limited and fixed for subsequent processing. Several fixtures for placing the top cover are fixed to the annular conveyor line for circumferential transport, thereby adding external mechanisms to continue assembling the bottom cover.

[0035] Working principle of this utility model: The magazine feeding mechanism starts working, and the bottom covers stacked in the feeding chamber fall under the action of gravity. The first bottom cover at the bottom falls into the second material hole. At this time, the first limiting cylinder 9 and the second limiting cylinder 10 of the limiting assembly drive the first limiting seat 11 to extend, preventing the bottom cover from falling further. When it is necessary to discharge, the first limiting seat 11 retracts, and at the same time, the fastening cylinder 8 drives the fastening block to cooperate with the fixing block 7 to clamp the second bottom cover at the bottom of the feeding chamber, ensuring that only one bottom cover falls into the feeding conveyor line at a time. The bottom cover falling from the magazine feeding mechanism reaches the feeding conveyor line through the first material hole, and the feeding conveyor line transports the bottom cover forward. When the bottom cover reaches the output end, the first limiting cylinder 13 and the second limiting cylinder 14 control the baffle column to descend, accurately positioning the bottom cover and stopping it at the predetermined position. The first robotic arm moves to the output end of the feeding conveyor line, grips the positioned bottom cover, and transfers it to the fixture on the circular conveyor line. The fixture is fixed to the circular guide rail by a sliding assembly, and the transport motor drives the fixture to move along the circular track via a drive disc and drive belt. The iron sheet mounting unit starts working. The circular vibrator 15 orients the iron sheets and then conveys them to the linear vibrator, which conveys the iron sheets forward. When the iron sheet reaches the outlet of the linear vibrator, the first blocking cylinder 17 of the blocking assembly drives the first stop block to insert into the positioning hole of the iron sheet, and the second blocking cylinder 18 drives the second stop block to block the subsequent iron sheets, achieving precise positioning. The displacement cylinder 20 of the iron sheet gripping assembly drives the gripper cylinder 21 to move to the outlet of the linear vibrator. After the gripper 22 grips the positioned iron sheet, the displacement cylinder 20 moves in the opposite direction, inserting the iron sheet laterally into the placement seat 24 of the staggered placement group. The linear slide 23 drives the placement seat 24 to move, transferring the iron sheet to the position to be picked up. The second robotic arm 19 moves above the misaligned placement assembly, picks up the iron sheet from the placement seat 24, and transfers it to the slot of the iron sheet insertion assembly. The iron sheet is precisely placed in the slot formed by the fixed insertion block 30 and the movable insertion block 31, with part of the iron sheet exposed outside the slot. The iron sheet insertion assembly begins to work. The first insertion cylinder 27 drives the insertion plate 28 to move upward, pre-inserting the exposed part of the iron sheet into the iron sheet placement slot of the bottom cover. Subsequently, the second insertion cylinder 29 drives the movable insertion block 31 to move upward, pushing the iron sheet completely into the bottom cover, completing the precise installation of the iron sheet. The bottom cover with the iron sheet installed continues to move along the circular conveyor line. When it reaches the processing station, the lifting and limiting cylinder drives the second limiting plate to rise, so that its slot engages with the cylindrical block of the sliding assembly, precisely positioning the fixture for subsequent assembly processes. The entire system operates cyclically, realizing continuous automated production.

[0036] 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 bottom cover assembly device for a smoke alarm, characterized in that, include: The bottom cover feeding unit includes a clip feeding mechanism and a feeding conveyor line. The bottom cover is sequentially fed into the feeding conveyor line through the clip feeding mechanism and flows into a designated position through the feeding conveyor line. In a circular conveyor line, the bottom cover that reaches a predetermined position on the feeding conveyor line is picked up by a first robotic arm and placed onto a fixture on the circular conveyor line. The bottom cover is then conveyed in a circular manner on the circular conveyor line for assembly. A sheet mounting unit is used to mount a sheet in the sheet placement groove of the bottom cover.

2. The bottom cover assembly device for a smoke alarm according to claim 1, characterized in that: The bottom cover feeding unit includes a base (1), on which a number of evenly arranged columns (2) are fixed. A fixed seat is fixed on the inner side of the column (2). The feeding conveyor line is fixed between the fixed seats. A first top plate (3) is fixed at the top of the column (2). The spring clip feeding mechanism is set on the first top plate (3). A number of first material holes are opened on the first top plate (3). The discharge port at the lower end of the spring clip feeding mechanism corresponds to the corresponding first material hole so that the bottom cover falls on the feeding conveyor line. The output end of the feeding conveyor line extends to the outside of the base (1).

3. The bottom cover assembly device for a smoke alarm according to claim 2, characterized in that: A plurality of cylindrical columns arranged in a rectangular array are fixed on the first top plate (3), and a second top plate (4) is fixed on the cylindrical columns; the magazine feeding mechanism includes a plurality of feeding components arranged in a single-row linear array, the feeding components are disposed on the second top plate (4), the second top plate (4) has a plurality of second material holes, the second material holes are located above the first material holes, the feeding components include four material columns (5) fixed on the second top plate (4), the four material columns (5) surround the periphery of the corresponding second material holes, and the four material columns (5) form a space for placing the bottom cover. The feeding chamber; two opposing arc-shaped blocks (6) are fixed at the upper end of the material column (5); the feeding assembly also includes a fixing block (7) fixed on the second top plate (4), and a fastening cylinder (8) is also fixed on the second top plate (4). The output end of the fastening cylinder (8) is fixed with a fastening block. The fixing block (7) is opposite to the fastening block and is located on the opposite side of the second material hole; the second base at the bottom of the feeding chamber is clamped and fixed by the fixing block (7) and the fastening block; the first base at the bottom of the feeding chamber is located in the second material hole and is limited by the limiting assembly.

4. The bottom cover assembly device for a smoke alarm according to claim 3, characterized in that: The limiting assembly includes a first limiting cylinder (9) and a second limiting cylinder (10) fixed on the first top plate (3). The first limiting cylinder (9) and the second limiting cylinder (10) are located on opposite sides of the first material hole. The output ends of the first limiting cylinder (9) and the second limiting cylinder (10) are fixed with a first limiting seat (11). The first limiting seat (11) is located between the first top plate (3) and the second top plate (4). When the first limiting seat (11) is in the initial position, the base in the second material hole is limited by the first limiting seat (11).

5. The bottom cover assembly device for a smoke alarm according to claim 2, characterized in that: The outer side of the output end of the feeding conveyor is fixed with a second limiting seat (12). The upper end of the second limiting seat (12) is fixed with two extension pieces. The lower side of the extension ends of the two extension pieces is fixed with a first limiting cylinder (13) and a second limiting cylinder (14). The output ends of the first limiting cylinder (13) and the second limiting cylinder (14) face downward and are respectively fixed with two baffles. The baffles limit the output of the bottom cover on the feeding conveyor.

6. The bottom cover assembly device for a smoke alarm according to claim 1, characterized in that: The iron sheet mounting unit includes a first frame and a second frame. The height of the first frame is less than the height of the second frame. A circular vibrator (15) and a linear vibrator for outputting iron sheets are fixed on the first frame. The discharge port of the circular vibrator (15) is connected to the inlet of the linear vibrator. The discharge end of the linear vibrator extends to the second frame. A baffle assembly is provided on the second frame. The baffle assembly is used to limit and block the iron sheet from the discharge port of the linear vibrator. The baffle assembly includes a baffle seat (16) fixed on the second frame. A first baffle cylinder (17) and a second baffle cylinder are fixed on the baffle seat (16). The cylinder (18), the first blocking cylinder (17) and the second blocking cylinder (18) are respectively fixed with a first block and a second block. The first block passes through the direct vibration output end and the corresponding iron sheet. The second block is located outside the direct vibration outlet to block the material. The second frame is provided with an iron sheet clamping assembly, a staggered placement assembly, a second robot (19) and an iron sheet insertion assembly. The iron sheet clamping assembly is used to clamp the iron sheet at the direct vibration outlet end and place it on the staggered placement assembly. Then, the second robot (19) clamps the iron sheet on the staggered placement assembly into the insertion slot of the iron sheet insertion assembly.

7. The bottom cover assembly device for a smoke alarm according to claim 6, characterized in that: The iron sheet clamping assembly includes a clamping seat fixed on the second frame, a displacement cylinder (20) fixed on the clamping seat, a connecting plate fixed on the output end of the displacement cylinder (20), a gripper cylinder (21) fixed on the lower side of the extension end of the connecting plate, and a gripper (22) for clamping the iron sheet at the output end of the gripper cylinder (21); the staggered placement assembly includes a vertical plate fixed on the second frame, a linear slide (23) driven by a motor fixed on the vertical plate, a slide plate fixed on the output end of the linear slide (23), and two placement seats (24) for placing iron sheets fixed on the slide plate; by adjusting the position of the placement seats (24), the opening of the placement seats (24) is aligned with the direct vibration outlet, and the iron sheet clamped by the gripper cylinder (21) driven by the displacement cylinder (20) is directly inserted horizontally into the placement groove of the placement seat (24).

8. The bottom cover assembly device for a smoke alarm according to claim 6, characterized in that: The iron sheet insertion assembly includes a sliding cylinder and two linear slide rails fixed to the second frame. A movable plate (25) is mounted on the slider of the sliding cylinder and the linear slide rails. Two uprights (26) are fixed on the movable plate (25). A first insertion cylinder (27) is fixed on the uprights (26). An insertion plate (28) is fixed to the output end of the first insertion cylinder (27). A second insertion cylinder (29) is fixed to the outer side of the insertion plate (28). A fixing block (30) is fixed to the outer side of the upper end of the insertion plate (28). The output end of the second insertion cylinder (29) extends upwards. A movable insert (31) is fixed therein, and the fixed insert (30) has grooves running through it from top to bottom. The movable insert (31) is adapted to the grooves. The upper ends of the movable insert (31) and the fixed insert (30) together form a slot. When the iron sheet is in the slot, a part of it is located outside the upper ends of the movable insert (31) and the fixed insert (30). The first insertion cylinder (27) drives the iron sheet to move upward as a whole. First, the exposed part of the iron sheet is inserted into the iron sheet placement slot of the bottom cover. Then, the second insertion cylinder (29) pushes the iron sheet upward as a whole, so that the iron sheet is completely inserted.

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