Automatic assembly equipment for square screws of smoke alarms

Abstract

The present invention provides an automatic assembly device for square screws for smoke alarms, comprising a workbench and a material tray fixing mechanism, a screw assembly mechanism, and a screw feeder installed on the workbench. The material tray fixing mechanism comprises a clamping table, a clamping cylinder, and a drive motor. The clamping table is used to place the material tray. The clamping cylinder passes through the clamping table via a push rod and is connected to a clamping claw on the surface of the clamping table. The clamping cylinder pushes out the push rod to drive the clamping claw to clamp the material tray. The lower end of the clamping table is fixed on a rotating disk, and the rotating disk is connected to the drive motor. The drive motor can drive the rotating disk and the material tray to rotate. The present invention provides an automatic assembly device for square screws for smoke alarms. The screw picking head in the screw assembly mechanism can sequentially suck the screws to the material tray at the clamping table to cooperate with the spring piece. Since the clamping table can rotate under the drive of the rotating disk, the screws can be sequentially fixed to each station on the edge of the material tray, thereby improving assembly efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of smoke alarm assembly equipment, in particular to an automatic assembly device for square screws of a smoke alarm. Background Art

[0002] The smoke detector is assembled from a PCB board, corresponding components within the PCB, and components such as the center buckle. The entire assembly process is complex and requires a lot of delicate operations. The traditional manual assembly process is time-consuming and labor-intensive, and is not only inefficient but also has a high error rate. The patent application number 202323081962.8 discloses an integrated smoke alarm assembly device, including a material tray, a conveying mechanism and multiple processing stations. The conveying mechanism includes a dividing plate, a pulley and a slide rail. The two ends of the pulley are respectively mounted on the dividing plate. The slide rails are arranged at equal intervals on the outside of the pulley. The processing stations are arranged around the slide rails. A feeding table is installed on the slide rail. A clamping mechanism is provided on the feeding table. The clamping mechanism is used to fix the material tray on the feeding table. A driving mechanism is provided on one side of the dividing plate. The driving mechanism is used to drive the clamping mechanism. The assembly equipment can automatically assemble the shrapnel of the smoke alarm material tray. Since the material tray is generally circular, it is difficult for the existing equipment to screw and assemble multiple shrapnel on the material tray at one time. Therefore, it is still necessary to manually screw and fix the material tray and shrapnel, which affects production efficiency. Summary of the Invention

[0003] (1) Technical issues to be resolved

[0004] The problem to be solved by the present invention is to provide an automatic assembly device for square screws of a smoke alarm, so as to overcome the defect that the smoke alarm assembly device in the prior art cannot automatically tighten the screws to assemble the spring pieces.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the present invention provides an automatic assembly device for square screws of smoke alarms, comprising a workbench and a material tray fixing mechanism, a screw assembly mechanism and a screw feeder installed on the workbench, wherein the material tray fixing mechanism is located at the front end of the screw feeder, and the screw assembly mechanism is located on one side. The material tray fixing mechanism comprises a clamping platform, a clamping cylinder and a driving motor. The clamping platform is used to place the material tray, and the assembled material tray needs to be manually placed on the clamping platform, the clamping cylinder passes through the clamping platform through a push rod and is connected to the clamping claws on the surface of the clamping platform, the clamping cylinder pushes out the push rod to drive the clamping claws to clamp the material tray, thereby fixing the material tray, the lower end of the clamping platform is fixed on a rotating disk, and the rotating disk is connected to the driving motor, and the driving motor can drive the rotating disk and the material tray connected thereto to rotate; the screw feeder sends out the screws, and the screw assembly mechanism transports the screws to the material tray for assembly, and the material tray rotates under the drive of the rotating disk, and the screws can be assembled to each work station of the material tray in sequence.

[0007] The transmission gear of the present invention is connected with the gear of said driving gear of said driving gear of said driving gear of said driving gear of said driving gear of said driving gear of said driving gear of said driving gear are both in said mounting seat; the transmission gear of said driving gear is connected with the gear of said driving gear of said driving gear of said driving gear of said driving gear of said driving gear of said mounting seat; the transmission gear of said driving gear is connected with the gear of said driving gear of said driving gear of said driving gear

[0008] In some embodiments, a plurality of spring clips are installed on the material tray, positioning ribs are symmetrically provided on the clamping table, and positioning grooves are symmetrically provided on the material tray. After the material tray is assembled, the positioning ribs pass through the positioning grooves. The material tray needs to be placed so that the positioning ribs are aligned with the positioning grooves to achieve the positioning purpose.

[0009] In some embodiments, a hinged seat is fixed to the end of the push rod, and the inner side of the clamping claw is symmetrically hinged on the hinged seat. A positioning seat is also fixed to the clamping table, and one end of the clamping claw is hinged on the positioning seat. The push rod pushes the hinged seat. Since the clamping claw is respectively hinged on the hinged seat and the positioning seat, the outer side of the clamping claw will drop when one side of the push rod rises, thereby pressing the material tray to fix it.

[0010] In some embodiments, a through rectangular groove is provided at the bottom of the mounting seat, and a rectangular block is fixed on the clamping cylinder. The rectangular block is placed in the rectangular groove. The rectangular block is smaller than the rectangular groove but its long side is larger than the short side of the rectangular groove. Therefore, it cannot rotate in the rectangular groove, thereby limiting the clamping cylinder and preventing the clamping cylinder from rotating with the rotating disk.

[0011] In some embodiments, the screw feeder is provided with a horizontal material rail, one end of the material rail is connected to the interior of the screw feeder, and the screws inside the screw feeder can be fed out along the material rail. The screw feeder is also provided with a feeding platform, and the other end of the material rail is located above the feeding platform. The clamping platform is located at the front end of the feeding platform. A plurality of screw holes are provided on the feeding platform, and the screws fall into the feeding platform along the material rail and enter the screw holes for positioning.

[0012] In some embodiments, the screw assembly mechanism is arranged on one side of the screw feeder and the material tray fixing mechanism, and the screw assembly mechanism includes a bracket, a transverse platform and a lifting platform. The transverse platform is installed on the bracket for transverse sliding, and the lifting platform is installed on the transverse platform for vertical sliding. A screw picking head is installed on the lifting platform. The transverse slide is used to drive the screw picking head to move transversely as a whole, and the lifting platform is used to drive the screw picking head to rise and fall when picking and discharging materials.

[0013] In some embodiments, the screw feeding head is fixed to the lower end of the lifting platform, and a screw tightening motor is installed on the upper end of the lifting platform in a liftable manner. A screwdriver is connected to the bottom of the screw tightening motor, and the screwdriver can pass through the screw feeding head; the bracket is connected to the transverse platform through a mounting plate, and the transverse platform is slidably mounted on the mounting plate through a transverse slide rail, and the lifting platform is slidably mounted on the transverse platform through a vertical slide rail, and the screw tightening motor is slidably mounted on the lifting platform through a vertical slide rail, and a feeding trough is provided at the bottom of the screw feeding head, which can absorb screws and transport them, and the transverse platform, lifting platform, screw tightening motor, etc. are all pushed by a cylinder to slide along the slide rail, and after the screw tightening motor descends, the screwdriver passes through the screw feeding head and screws the screw at the connection between the spring piece and the material tray to fix it.

[0014] (3) Beneficial effects

[0015] The present invention provides an automatic assembly device for square screws for smoke alarms, in which a clamping table is arranged on one side of a screw feeder feeding table. The screws can be sucked into the material tray and matched with the spring pieces at the clamping table in sequence through the screw feeding head in the screw assembly mechanism. Since the clamping table can be rotated by the driving of the rotating disk, the screws can be fixed in sequence at various stations on the edge of the material tray, without the need for manual screw tightening, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a three-dimensional diagram of an automatic assembly device for square screws of a smoke alarm according to the present invention;

[0018] Figure 2 This is a three-dimensional diagram of the tray fixing mechanism of the automatic assembly equipment for square screws of a smoke alarm according to the present invention;

[0019] Figure 3 This is a bottom perspective view of a tray fixing mechanism of an automatic square screw assembly device for a smoke alarm according to the present invention;

[0020] Figure 4 This is a three-dimensional diagram of the internal structure of the tray fixing mechanism of the automatic assembly equipment for square screws of a smoke alarm according to the present invention;

[0021] Figure 5 This is a three-dimensional diagram of the clamping table and clamping cylinder of the automatic assembly equipment for square screws of a smoke alarm according to the present invention;

[0022] Figure 6 This is a three-dimensional diagram of the clamping cylinder, push rod and clamping claws of the automatic assembly equipment for square screws of a smoke alarm according to the present invention;

[0023] Figure 7 This is a three-dimensional diagram of the clamping cylinder and ejector rod of the automatic assembly equipment for square screws of a smoke alarm according to the present invention;

[0024] Figure 8 This is a three-dimensional diagram of a coupling of an automatic assembly device for square screws of a smoke alarm according to the present invention;

[0025] Figure 9 A three-dimensional diagram of a screw feeder of an automatic assembly device for square screws of a smoke alarm according to the present invention;

[0026] Figure 10 This is a front perspective view of a screw assembly mechanism of an automatic square screw assembly device for a smoke alarm according to the present invention;

[0027] Figure 11 This is a back perspective view of a screw assembly mechanism of an automatic square screw assembly device for a smoke alarm according to the present invention;

[0028] Figure 12 This is a bottom perspective view of a screw assembly mechanism of an automatic square screw assembly device for a smoke alarm according to the present invention;

[0029] Figure 13 This is a three-dimensional view of the material tray of the automatic assembly equipment for square screws of smoke alarms according to the present invention.

[0030] The names of the components corresponding to the various figure marks in the figure are: 1. Workbench; 2. Clamping table; 3. Clamping cylinder; 4. Driving motor; 5. Material tray; 6. Push rod; 7. Clamping claw; 8. Rotating disk; 9. Screw feeder; 10. Screw; 11. Mounting seat; 12. Driven gear; 13. Driving gear; 14. Coupling; 15. Arc groove; 16. Spring piece; 17. Positioning rib; 18. Positioning groove; 19. Articulated seat; 20. Positioning seat; 21. Rectangular groove; 22. Rectangular block; 23. Material rail; 24. Material retrieving table; 25. Screw hole; 26. Bracket; 27. Transverse table; 28. Lifting table; 29. ​​Screw retrieving head; 30. Screw tightening motor; 31. Screwdriver; 32. Mounting plate; 33. Slide rail; 34. Material retrieving trough. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0033] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0034] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0035] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0036] See Figures 1 to 13The present invention provides an automatic assembly device for square screws of smoke alarms, comprising a workbench 1 and a tray fixing mechanism, a screw assembly mechanism and a screw feeder 9 installed on the workbench 1, wherein the screw assembly mechanism is fixed to the workbench 1 through a bracket 26, the bottom of the tray fixing mechanism is fixed to the workbench 1 through a mounting seat 11, the tray fixing mechanism comprises a clamping platform 2, a clamping cylinder 3 and a driving motor 4, the clamping platform 2 is located at the front end of the screw feeder 9, the screw assembly mechanism is located on one side of the screw feeder 9 and the tray fixing mechanism, and is used to feed the screws. The screws sent out by the machine 9 are transported to the clamping table 2 and assembled; the clamping table 2 is used to place the material tray 5, and a plurality of spring pieces 16 are installed on the material tray 5. These spring pieces 16 are assembled to the material tray 5 through other smoke alarm assembly equipment, but are not fixed yet and need to be tightened and fixed by screws 10. The clamping cylinder 3 passes through the clamping table 2 through the push rod 6 and is connected to the clamping claw 7 on the surface of the clamping table 2. The cylinder shaft of the clamping cylinder 3 is connected to the push rod 6 through the coupling 14. The bottom of the push rod 6 is inserted in the coupling 14, and the surface and the inner wall of the coupling 14 are at the same height. An arc groove 15 is provided around it, and a steel ball is assembled in the arc groove 15. The arc groove 15 of the coupling 14 and the ejector rod 6 are combined to form a circular closed-loop groove, in which the steel ball is located, so that the coupling 14 plays the role of a bearing. Therefore, the cylinder shaft of the clamping cylinder 3 at both ends of the coupling 14 and the ejector rod 6 can rotate relative to each other, and the clamping cylinder 3 ejects the ejector rod 6 to drive the clamping claw 7 to clamp the material tray 5. The lower end of the clamping table 2 is fixed on the rotating disk 8, and the rotating disk 8 is connected to the drive motor 4 through the transmission structure, so that the drive motor 4 can drive the rotating disk 8 and the material tray 5 at the same time. The material tray 5 rotates step by step. At this time, the clamping claws 7 and the push rod 6 on the material tray 5 also rotate synchronously. The coupling 14 makes the clamping cylinder 3 remain stationary when the push rod 6 rotates. Since the clamping cylinder 3 needs to be connected to an external air pipe, it cannot rotate. The screw feeder 9 can send out the screws 10 in sequence, and the screw assembly mechanism transports the screws 10 to the material tray 5 for assembly. During the assembly process, the material tray 5 rotates. Since there are multiple spring pieces 16 on the material tray 5 that need to be assembled, the screw assembly mechanism can assemble all the multiple screws 10 to the material tray 5 after rotation.

[0037] In some embodiments, as Figures 2 to 6The gear 12 is connected to the drive shaft 13 of the driving motor 4 so as to mesh with the driven gear 12. The driven gear 12 and the driving gear 13 are both located in the hollow part of the mounting seat 11. When the driving motor 4 is working, the driven gear 12 and the rotating disk 8 are driven by the driving gear 13 to rotate as a whole, thereby driving the clamping table 2 and the material tray 5 to rotate as a whole. In this embodiment, the clamping table 2 is symmetrically provided with positioning ribs 17, and the material tray 5 is symmetrically provided with positioning grooves 18. After the material tray 5 is assembled, the positioning ribs 17 pass through the positioning grooves 18. When the material tray 5 is placed, the positioning grooves 18 need to be aligned with the positioning ribs 17 for positioning. The end of the top rod 6 is fixed with a hinge seat 19. The inner sides of the clamping claws 7 are symmetrically hinged on the hinge seat 19. The clamping table 2 is also fixed with a hinge seat 19. There is a positioning seat 20, one end of the clamping claw 7 is hinged on the positioning seat 20, and the lifting rod 6 will pull the hinge seat 19 to lift. Since the inner side of the clamping claw 7 is hinged on the hinge seat 19, and the lower end is also hinged with the positioning seat 20, the push rod 6 will drive the inner side of the clamping claw 7 to swing upward when it pushes the hinge seat 19, and the outer side will press down. The clamping claw 7 is long and the material tray 5 is hollow. The clamping claw 7 passes through the hollow part and the outer edge is placed on the pressure of the material tray 5. The clamping claw 7 is above the closing part, so the outer side of the clamping claw 7 can fix the material tray 5 after pressing down; in addition, a through rectangular groove 21 is provided at the bottom of the mounting seat 11, and a rectangular block 22 is fixed on the clamping cylinder 3, and the rectangular block 22 is placed in the rectangular groove 21. The rectangular groove 21 is larger than the rectangular block 22, but the length of the rectangular block 22 is greater than the width of the rectangular groove 21. Therefore, the rectangular block 22 cannot rotate relative to the rectangular groove 21, thereby preventing the clamping cylinder 3 from rotating when the push rod 6 rotates.

[0038] In some embodiments, as Figure 9 As shown, the screw feeder 9 is provided with a horizontal material rail 23, one end of the material rail 23 is connected to the inside of the screw feeder 9, and the screw feeder 9 is also provided with a feeding platform 24, the other end of the material rail 23 is located above the feeding platform 24, the clamping platform 2 is located at the front end of the feeding platform 24, and the feeding platform 24 is provided with a plurality of screw holes 25. The screw feeder 9 transports the screws 10 to the feeding platform 24 through the material rail 23 and drops them into the screw holes 25 for positioning.

[0039] In some embodiments, as Figures 10-12As shown, the screw assembly mechanism includes a bracket 26, a transverse platform 27 and a lifting platform 28. The bracket 26 is fixed on the workbench 1, the transverse platform 27 is slidably installed on the bracket 26, and the lifting platform 28 is slidably installed on the transverse platform 27. A screw picking head 29 is installed on the lifting platform 28; specifically, the screw picking head 29 is fixed to the lower end of the lifting platform 28, and a screw tightening motor 30 is installed on the upper end of the lifting platform 28 for lifting and lowering. A screwdriver 31 is connected to the bottom of the screw tightening motor 30, and the screwdriver 31 can pass through the screw picking head 29. The bracket 26 is connected to the transverse platform 27 through a mounting plate 32, and the transverse platform 27 is slidably installed on the mounting plate 32 through a transverse slide rail 33. The lifting platform 28 is slidably installed on the transverse platform 27 through a vertical slide rail 33. The screw tightening motor 30 is slidably installed on the lifting platform 28 through a vertical slide rail 33, and a material picking trough 34 is provided at the bottom of the screw picking head 29; the lifting platform 28 and the transverse platform 27 are fixed on the workbench 1. After the screw-tightening motor 30 is lowered along the slide rail 33, the screwdriver 31 passes through the screw-tightening head 29 to tighten the screws. After multiple operations and the rotation of the material tray 5, all the shrapnel 16 are fixed by the screws 10.

[0040] The present invention provides an automatic assembly device for square screws for smoke alarms, in which a clamping table is arranged on one side of a screw feeder feeding table. The screws can be sucked into the material tray and matched with the spring pieces at the clamping table in sequence through the screw feeding head in the screw assembly mechanism. Since the clamping table can be rotated by the driving of the rotating disk, the screws can be fixed in sequence at various stations on the edge of the material tray, without the need for manual screw tightening, thereby improving assembly efficiency.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An automatic assembly device for square screws for smoke alarms, comprising a workbench (1), a tray fixing mechanism, a screw assembly mechanism, and a screw feeder (9) mounted on the workbench (1), characterized in that: The material tray fixing mechanism includes a clamping table (2), a clamping cylinder (3) and a driving motor (4); the clamping table (2) is used to place the material tray (5); the clamping cylinder (3) passes through the clamping table (2) through a push rod (6) and is connected to a clamping claw (7) on the surface of the clamping table (2); the clamping cylinder (3) pushes out the push rod (6) to drive the clamping claw (7) to clamp the material tray (5); the lower end of the clamping table (2) is fixed on a rotating disk (8); the rotating disk (8) is connected to the driving motor (4); the driving motor (4) can drive the rotating disk (8) and the material tray (5) to rotate; the screw feeder (9) sends out the screw (10); the screw assembly mechanism transports the screw (10) to the material tray (5) for assembly; a mounting base (11) is fixed on the workbench (1), the clamping cylinder (3) and the driving motor (4) are fixed to the bottom of the mounting base (11), the rotating disk (8) is rotatably mounted on the mounting base (11), a driven gear (12) is fixed to the bottom of the rotating disk (8), and a driving gear (13) meshing with the driven gear (12) is connected to the driving motor (4); the clamping cylinder (3) is connected to the push rod (6) through a coupling (14), the bottom of the push rod (6) is inserted into the coupling (14), and an arc groove (15) is provided around the surface of the push rod (6) at the same height as the inner wall of the coupling (14), and a steel ball is installed in the arc groove (15).

2. The automatic square screw assembly equipment for smoke alarms according to claim 1, characterized in that: A plurality of spring pieces (16) are mounted on the material tray (5), positioning ribs (17) are symmetrically provided on the clamping platform (2), and positioning grooves (18) are symmetrically provided on the material tray (5). After the material tray (5) is assembled, the positioning ribs (17) pass through the positioning grooves (18).

3. The automatic square screw assembly equipment for smoke alarms according to claim 1, characterized in that: A hinge seat (19) is fixed to the end of the push rod (6), and the inner side of the clamping claw (7) is symmetrically hinged on the hinge seat (19). A positioning seat (20) is also fixed on the clamping platform (2), and one end of each of the clamping claws (7) is hinged on the positioning seat (20).

4. The automatic square screw assembly equipment for smoke alarms according to claim 1, characterized in that: A through rectangular groove (21) is provided at the bottom of the mounting seat (11), a rectangular block (22) is fixed on the clamping cylinder (3), and the rectangular block (22) is placed in the rectangular groove (21).

5. The automatic square screw assembly equipment for smoke alarms according to claim 1, characterized in that: The screw feeder (9) is provided with a horizontal material rail (23), one end of which is connected to the interior of the screw feeder (9), and the screw feeder (9) is also provided with a material taking platform (24), the other end of which is located above the material taking platform (24), the clamping platform (2) is located at the front end of the material taking platform (24), and the material taking platform (24) is provided with a plurality of screw holes (25).

6. The automatic square screw assembly equipment for smoke alarms according to claim 1, characterized in that: The screw assembly mechanism is arranged on one side of the screw feeder (9) and the material tray fixing mechanism, and the screw assembly mechanism includes a bracket (26), a transverse platform (27) and a lifting platform (28). The transverse platform (27) is installed on the bracket (26) in a transverse sliding manner, and the lifting platform (28) is installed on the transverse platform (27) in a vertical sliding manner. A screw picking head (29) is installed on the lifting platform (28).

7. The automatic square screw assembly equipment for smoke alarms according to claim 6, characterized in that: The screw taking head (29) is fixed to the lower end of the lifting platform (28), and a screw tightening motor (30) is installed on the upper end of the lifting platform (28) in a lifting manner. A screw driver (31) is connected to the bottom of the screw tightening motor (30), and the screw driver (31) can pass through the screw taking head (29).

8. The automatic square screw assembly equipment for smoke alarms according to claim 7, characterized in that: The bracket (26) is connected to the transverse platform (27) through a mounting plate (32); the transverse platform (27) is slidably mounted on the mounting plate (32) through a transverse slide rail (33); the lifting platform (28) is slidably mounted on the transverse platform (27) through a vertical slide rail (33); the screw-tightening motor (30) is slidably mounted on the lifting platform (28) through a vertical slide rail (33); and a material trough (34) is provided at the bottom of the screw feeding head (29).

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