Automatic assembly equipment for three-hole security door

Abstract

The application discloses a kind of three-hole security door automatic assembly equipment, including rack, rotary table, assembly seat, assembly groove, first vibrating disc, security door conveying device, second vibrating disc, spring conveying device, further including setting on rack and for the security door and spring that assembly is completed is pushed out assembly groove unloading assembly, the upper side of assembly seat is equipped with the opening groove that is communicated with assembly groove, material drop slide is set on the rack with rotary table side edge butt joint and lower end extends to the outside of rack with lower end inclination, unloading assembly includes the stand column that setting on the rack and located material drop slide side, the shaft sleeve that setting on the upper end of stand column, the connecting shaft that passes through shaft sleeve, one end is connected with the end of connecting shaft and the other end is used to pass through opening groove after resistance on the push rod of security door, setting on the rack and for driving piece that the intermittent rotation of connecting shaft is driven.

Description

An automatic assembly equipment for three-hole security doors Technical Field

[0001] This invention belongs to the field of socket assembly technology, and specifically relates to an automatic assembly device for a three-hole safety door. Background Technology

[0002] Safety doors, also known as protective shutters, are designed to prevent users from accidentally inserting fingers or other foreign objects into sockets, which could lead to electric shock. To reset the safety door, existing sockets use a return spring installed between the panel and the safety door. One end of the return spring is fitted onto the safety door's latch, and the other end is fitted onto the panel's latch. The spring's elastic restoring force resets the safety door.

[0003] Currently, Chinese patent CN210756281U, published on June 16, 2020, discloses an automatic assembly machine for socket springs. The machine includes a frame, a rotatable clamp turntable mounted on the frame, a spring conveying device, a transfer device, a socket cover conveying device, and a protective door conveying device. The spring conveying device is connected to the protective door conveying device to convey the springs into the protective door conveying device. Both the socket cover conveying device and the protective door conveying device are positioned above the clamp turntable to convey the socket cover to the clamp. The protective door and spring are assembled onto the socket cover on the turntable. The transfer device is located near the turntable on the frame to transfer the socket cover assembled on the turntable to the next station. The spring conveying device includes a storage tank, an air inlet and a discharge outlet on the storage tank. The springs are stored in the storage tank. The air inlet is connected to an external air source through an air pipe, and the discharge outlet is connected to the protective door conveying device through a pipe. When conveying the springs, gas enters the air inlet from the external air source and blows the springs from the storage tank into the discharge outlet.

[0004] This type of automatic socket spring assembly machine can complete the assembly of the protective door, spring and socket cover after the fixture turntable rotates once; however, for manufacturers that only produce protective door accessories, they do not need to be involved in the assembly of the socket cover, so this type of automatic socket spring assembly machine cannot meet the working conditions of assembling only the protective door and spring. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic assembly device for a three-hole safety door, which facilitates the assembly of the safety door and the spring.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic assembly device for a three-hole safety door, comprising a frame, a turntable rotatably connected to the center of the frame, a plurality of assembly seats disposed on the periphery of the upper surface of the turntable, an assembly slot formed on the assembly seat, a first vibratory feeder disposed on one side of the frame for conveying the safety door, a safety door conveying device disposed on the frame for driving the safety door conveyed in the first vibratory feeder into the assembly slot, a second vibratory feeder disposed on the frame for conveying a spring, and a spring disposed on the frame for driving the spring conveyed in the second vibratory feeder to be embedded in the safety door. The conveying device also includes an unloading assembly mounted on the frame for pushing the assembled safety door and spring out of the assembly slot. The upper side of the assembly base has an opening slot communicating with the assembly slot. The frame is provided with a material discharge slide whose upper end is connected to the side of the turntable and whose lower end extends downward to the outside of the frame. The unloading assembly includes a column mounted on the frame and located on one side of the material discharge slide, a bushing mounted on the upper end of the column, a connecting shaft passing through the bushing, a push rod whose one end is connected to the end of the connecting shaft and whose other end is used to pass through the opening slot and abut against the safety door, and a drive component mounted on the frame for intermittently rotating the connecting shaft.

[0007] By adopting the above technical solution, the first vibratory feeder transports the safety doors one by one, and then the safety door conveying device transports the safety doors into the assembly slots on the assembly base. Then the turntable rotates to rotate the assembly base with the safety doors to the position of the spring conveying device. The spring conveying device can then embed the springs transported one by one from the second vibratory feeder into the safety doors, thereby completing the assembly of the safety doors and springs.

[0008] The turntable then continues to rotate, moving the assembly base with safety doors and springs to the unloading assembly position. A drive mechanism intermittently rotates the connecting shaft; each rotation drives a push rod, whose lower end passes through the slot and abuts against the safety door inside the assembly slot. Under the push rod's force, the assembled safety door and spring are pushed out of the slot, allowing the safety door to slide down the unloading chute. Simultaneously, as the turntable rotates multiple assembly bases sequentially to the unloading assembly position, the intermittently rotating push rod continuously drives the safety doors within the assembly bases to complete the unloading process.

[0009] A further embodiment of the present invention includes a storage assembly located outside the frame for receiving a safety door that slides down the unloading chute. The storage assembly includes a base, a rotating shaft disposed on the base, a turntable disposed at the upper end of the rotating shaft, a storage tray frame placed on the turntable, and a plurality of storage boxes disposed around the storage tray frame for the safety door to fall into.

[0010] By adopting the above technical solution, as the safety door in the material discharge chute slides down, the safety door can slide into the storage box. The rotating shaft drives the turntable to rotate, so that the same number of safety doors fall into each storage box.

[0011] A further provision of the present invention is that: a gearbox is provided on the base, a driving gear is rotatably connected inside the gearbox, a drive motor with an output shaft connected to the driving gear is fixed on the lower side of the gearbox, and a driven gear is also rotatably connected inside the gearbox and connected to the lower end of the rotating shaft and meshing with the driving gear.

[0012] By adopting the above technical solution, the drive motor drives the active gear to rotate. Since the active gear and the driven gear mesh, the active gear can then drive the driven gear to rotate, which in turn drives the rotating shaft and turntable to rotate, so that the same number of safety doors fall into each storage box. At this time, it is convenient to count the safety doors.

[0013] A further configuration of the present invention includes: a drive component comprising a linkage gear rotatably connected within a gearbox and meshing with a driven gear; a linkage shaft whose lower end is connected to the linkage gear and whose upper end extends to the upper side of the gearbox; a first swing arm disposed on the linkage shaft; a second swing arm disposed on the connecting shaft at the end away from the push rod; a reset torsion spring sleeved on the connecting shaft, with one end connected to the second swing arm and the other end connected to the bushing; two guide wheels rotatably connected to the frame; a connecting rope whose one end is connected to the second swing arm at the end away from the connecting shaft and whose other end passes through the two guide wheels; a fixed arm disposed on the lower side of the frame; a guide sleeve disposed at the end of the fixed arm; a sliding arm whose one end passes through the guide sleeve and is connected to the end of the connecting rope; and a linkage arm disposed on the sliding arm at the end away from the connecting rope and for the first swing arm to abut against.

[0014] By adopting the above technical solution, when the driven gear rotates, it can drive the linkage gear to rotate, and the linkage gear can drive the linkage shaft and the first swing arm to rotate. After the first swing arm rotates one revolution, it can drive the linkage arm and the sliding arm to move away from the frame, thereby driving the second swing arm to swing through the connecting rope. The second swing arm can drive the push rod to complete the swing, and the return torsion spring will twist. Thus, the lower end of the push rod can pass through the opening slot and abut against the safety door in the assembly slot. At this time, under the pushing force of the push rod, the safety door and spring that have been assembled in the assembly slot can be pushed out of the assembly slot, and then the safety door can slide out along the unloading slide. At the same time, during the period when the first swing arm is separated from the linkage arm, the elastic restoring force of the return torsion spring can drive the second swing arm and the push rod to return to their original positions.

[0015] At this point, as the driven gear drives the linkage gear to rotate continuously, the linkage gear can drive the first swing arm to swing intermittently. Finally, the second swing arm and push rod can be driven to swing intermittently through the connecting rope and linkage arm, thereby completing the unloading of safety doors in multiple assembly seats.

[0016] A further feature of the present invention is that: four mounting arms are provided on the periphery of the upper end of the rotating shaft, and guide posts extending vertically upward are provided on the mounting arms; a central hole for the rotating shaft to pass through is provided at the center of the turntable; guide holes for the guide posts to pass through are provided on the periphery of the central hole of the turntable; and a connecting spring that abuts against the lower surface of the turntable is sleeved on the guide post.

[0017] By adopting the above technical solution, the turntable uses guide holes for guide posts to pass through, and a connecting spring is fitted on the guide post to abut against the lower surface of the turntable. The connecting spring can support the storage tray frame on the turntable. As the number of safety doors in each storage box gradually increases, the weight of the entire storage tray frame can increase, thereby pressing the turntable down to move downward. At this time, the connecting spring can be compressed. The weight of the storage tray frame can be determined by the distance the turntable moves down, thereby determining the number of safety doors in each storage box.

[0018] When security door accessories need to be packaged and transported, since the number of security doors in each storage box is equal, and the number of security doors in each storage box is determined by the distance the turntable moves down, the security doors in each storage box can then be directly packaged without the need for separate counting operations. This makes it convenient to pack security door accessories quickly and accurately.

[0019] A further embodiment of the present invention is that the storage tray frame includes a rectangular sleeve fitted around the four guide posts, an annular box located outside the rectangular sleeve and into which multiple storage boxes are placed, and a connecting rod disposed between the annular box and the rectangular sleeve.

[0020] By adopting the above technical solution, the storage tray frame is fitted around the four guide pillars with a rectangular sleeve. The four guide pillars can drive the storage tray frame to rotate. At the same time, the ring box can be used to arrange multiple storage boxes evenly around the periphery, so that the safety door can smoothly fall into each storage box.

[0021] A further feature of the present invention is that the cross-section of the material discharge slide is U-shaped, the lower end of the material discharge slide is provided with a cover that abuts against the outer wall of the annular box, both sides of the lower end of the material discharge slide are provided with hinge arms, the hinge arms are provided with hinge holes, the side of the end of the cover is provided with a hinge shaft that passes through the hinge hole, the end of the hinge shaft on one side is provided with a baffle, and the baffle is provided with a drive torsion spring that is sleeved on the hinge shaft and has one end connected to the baffle and the other end connected to the hinge arm.

[0022] By adopting the above technical solution, when the empty collection tray is collecting safety doors, the cover at the lower end of the material discharge chute flips down and fits against the outer wall of the annular box, and the drive torsion spring undergoes elastic torsion; as the weight of the collection tray increases and the turntable moves down, when the annular box moves down to the point of detaching from the cover, the cover can flip up under the elastic restoring force of the drive torsion spring and close the material discharge chute. At this time, it can be said that the specified number of safety doors to be collected has been collected in each collection box.

[0023] A further configuration of the present invention is as follows: an extension column extending vertically upward is provided at the upper end of the linkage shaft, a vibration spring is provided at the upper end of the extension column, a vibration ball is provided at the end of the vibration spring away from the extension column, and a vibration ring for the vibration ball to abut against is provided on the lower surface of the annular box.

[0024] By adopting the above technical solution, when the linkage shaft drives the first swing arm to rotate, the linkage shaft will also drive the extension column and the vibrating spring to rotate. The vibrating spring can then drive the vibrating ball to strike the vibrating ring, thereby providing vibration force to the turntable. At this time, it can provide vibration force to the inside of the storage box, which will ultimately help to stably store multiple safety doors inside the storage box and prevent multiple safety doors from overflowing the storage box after being stacked haphazardly.

[0025] A further feature of the present invention is that the vibrating ring has an inwardly recessed arc-shaped portion on the side near the annular box for embedding the vibrating ball, and the vibrating ball enters the arc-shaped portion after the annular box moves down.

[0026] By adopting the above technical solution, when the storage box is collecting safety doors, the vibrating ball strikes the vibrating ring, and the knocking sound can remind the operator that the collection is in progress. When the ring box moves down and the vibrating ball enters the arc-shaped part, the ring box also separates from the cover. At this time, the collection of safety doors can be completed in the storage box. Since the knocking sound is lost after the vibrating ball enters the arc-shaped part, it can remind the operator that the collection is complete and the storage tray needs to be replaced.

[0027] The beneficial effects of the present invention are as follows: the first vibratory feeder transports the safety doors one by one, and then the safety door conveying device transports the safety doors into the assembly slots on the assembly base. Then the turntable rotates to rotate the assembly base with the safety doors to the position of the spring conveying device. The spring conveying device can then embed the springs transported one by one from the second vibratory feeder into the safety doors, thereby completing the assembly of the safety doors and springs.

[0028] The turntable then continues to rotate, moving the assembly base with the safety door and spring to the unloading assembly position. A drive motor rotates the drive gear, which in turn drives the driven gear. The driven gear, in turn, drives the linkage gear, which in turn drives the linkage shaft and the first swing arm. After one revolution, the first swing arm moves the linkage arm and sliding arm away from the frame, causing the second swing arm to swing via a connecting rope. The second swing arm then drives the push rod to complete its swing, and the return torsion spring twists. The lower end of the push rod passes through the opening slot and abuts against the safety door inside the assembly slot. Under the pushing force of the push rod, the assembled safety door and spring are pushed out of the assembly slot, and the safety door slides down the unloading chute. Simultaneously, during the disengagement of the first swing arm from the linkage arm, the elastic restoring force of the return torsion spring resets the second swing arm and push rod.

[0029] At this time, as the driven gear drives the linkage gear to rotate continuously, the linkage gear can drive the first swing arm to swing intermittently, and finally drive the second swing arm and push rod to swing intermittently through the connecting rope and linkage arm, thereby completing the unloading of the safety door in multiple assembly seats.

[0030] The turntable uses guide holes for guide posts to pass through, and the guide posts are fitted with connecting springs that abut against the lower surface of the turntable. The connecting springs support the storage tray frame on the turntable. As the number of safety doors in each storage box gradually increases, the weight of the entire storage tray frame increases, thus pressing the turntable down. When the annular box moves down to the point where it separates from the cover, the cover flips upward under the elastic restoring force of the drive torsion spring and closes the material discharge chute. This indicates that the specified number of safety doors to be collected has been collected in each storage box.

[0031] When safety door accessories need to be packaged and transported, since the number of safety doors in each storage box is equal and the number of safety doors in each storage box meets the number of safety doors required for each packing bag, the safety doors in each storage box can be directly packed without the need for separate counting operations. This makes it convenient to pack safety door accessories quickly and accurately.

[0032] Simultaneously, when the storage box is collecting safety doors, the vibrating ball strikes the vibrating ring, and the knocking sound alerts the operator that the collection is in progress. When the ring box moves down and the vibrating ball enters the curved section, the ring box separates from the cover. At this point, the collection of safety doors is complete. Since the knocking sound disappears after the vibrating ball enters the curved section, it alerts the operator that the collection is complete and the storage tray needs to be replaced. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 is a schematic diagram of the structure of the present invention;

[0035] Figure 2 is an enlarged view of the assembly base in this invention;

[0036] Figure 3 is a schematic diagram of the connection relationship between the unloading component and the receiving component in this invention;

[0037] Figure 4 is a magnified view of a partial structure on the lower surface of the turntable in this invention;

[0038] Figure 5 is a schematic diagram of the internal structure of the gearbox in this invention;

[0039] Figure 6 is an enlarged view of part A in Figure 3;

[0040] Figure 7 is a structural plan view of the storage component in this invention. At this time, the annular box moves down to separate from the cover, and the specified number of safety doors to be collected are collected in each storage box. At the same time, the annular box moves down so that the vibrating ball enters the arc-shaped part.

[0041] In the diagram, 1. Frame; 11. Turntable; 12. First vibratory feeder; 13. Safety gate conveyor; 14. Second vibratory feeder; 15. Spring conveyor; 16. Material discharge chute; 161. Hinge arm; 162. Hinge hole; 2. Assembly base; 21. Assembly slot; 22. Opening slot; 3. Unloading assembly; 31. Column; 32. Bushing; 33. Connecting shaft; 34. Push rod; 35. Drive component; 351. Linkage gear; 352. Linkage shaft; 3521. Extension column; 3522. Vibrating spring; 3523. Vibrating ball; 353. First swing arm; 354. Second swing arm; 355. Return torsion spring; 356. Guide wheel; 35 7. Connecting rope; 358. Fixed arm; 359. Guide sleeve; 360. Sliding arm; 361. Linkage arm; 4. Storage assembly; 41. Base; 42. Rotating shaft; 421. Mounting arm; 422. Guide post; 423. Connecting spring; 43. Turntable; 431. Center hole; 432. Guide hole; 44. Storage tray frame; 441. Rectangular sleeve; 442. Annular box; 4421. Vibrating ring; 4422. Arc-shaped part; 443. Connecting rod; 45. Storage box; 5. Gearbox; 51. Driving gear; 52. Drive motor; 53. Driven gear; 6. Cover; 61. Hinge shaft; 611. Baffle plate; 612. Drive torsion spring. Detailed Implementation

[0042] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] An automatic assembly device for three-hole safety doors, referring to Figures 1 and 2, includes a frame 1, a turntable 11, assembly seats 2, assembly slots 21, a first vibratory feeder 12, a safety door conveying device 13, a second vibratory feeder 14, a spring conveying device 15, an unloading assembly 3, and a receiving assembly 4. The turntable 11 is rotatably connected to the center of the frame 1 via shafts and bearings. The frame 1 contains a servo motor (not shown) with an output shaft connected to the turntable 11, which drives the turntable 11 to rotate intermittently. Multiple assembly seats 2 are provided and bolted to the turntable 1. The upper surface of the frame 1 is surrounded by an assembly slot 21, which is formed on the assembly base 2 and is used for embedding the safety door. The first vibratory plate 12 is installed on one side of the frame 1 and is used to transport the safety door. The safety door conveying device 13 transports the safety door into the assembly slot 21 through a cylinder or other structure. At the same time, the second vibratory plate 14 is installed on the frame 1 and is used to transport the spring. The spring conveying device 15 embeds the spring into the safety door through an air pipe and a jet pump or other structure. Since the internal structures of the first vibratory plate 12, the safety door conveying device 13, the second vibratory plate 14, and the spring conveying device 15 are all existing technologies, they will not be described in detail here.

[0044] Referring to Figures 1 and 3, the unloading assembly 3 is mounted on the frame 1 and is used to push the assembled safety door and spring out of the assembly slot 21. The upper side of the assembly base 2 is provided with an opening slot 22 that communicates with the assembly slot 21. The frame 1 is fixed with bolts to a material discharge slide 16 whose upper end is connected to the side of the turntable 11 and whose lower end extends downward to the outside of the frame 1. The cross-section of the material discharge slide 16 is "U".

[0045] Referring to Figures 3, 4, and 5, the storage assembly 4 is located outside the frame 1 and is used to store the safety door that slides down from the unloading chute 16. This storage assembly 4 includes a base 41, a rotating shaft 42, a turntable 43, a storage tray frame 44, and multiple storage boxes 45. The base 41 is fixed to the ground with anchor bolts, while the rotating shaft 42 is rotatably connected to the base 41 via a bearing at its lower end. The turntable 43 is located on the upper end of the rotating shaft 42, and four mounting arms 421 are welded to the circumference of the upper end of the rotating shaft 42. Guide posts 422 extending vertically upward are welded onto the mounting arms 421. A central hole 431 for the rotating shaft 42 to pass through is provided at the center of the turntable 43, and guide holes 432 for the guide posts 422 to pass through are provided around the central hole 431 of the turntable 43. The guide posts 422 are fitted with abutting against the lower surface of the turntable 43. The surface is connected by a spring 423; the storage tray frame 44 is set on the turntable 43. The storage tray frame 44 includes a rectangular sleeve 441, an annular box 442, and a connecting rod 443. The rectangular sleeve 441 is fitted around the four guide posts 422, while the annular box 442 is located outside the rectangular sleeve 441. Multiple storage boxes 45 are placed inside the annular box 442. The connecting rod 443 is welded between the annular box 442 and the rectangular sleeve 441. A gearbox 5 is fixed to the base 41 by bolts. The gearbox 5 contains a drive gear 51 rotatably connected to the drive gear 51 via a shaft and bearings. The gearbox 5 also contains a drive motor 52 with an output shaft connected to the drive gear 51, which is fixed to the lower side of the gearbox 5 by bolts. The gearbox 5 also contains a driven gear 53 rotatably connected to the gearbox 5 via bearings. The driven gear 53 is fixed to the lower end of the rotating shaft 42 and meshes with the drive gear 51.

[0046] Referring to Figures 3 and 6, a cover 6 that abuts against the outer wall of the annular box 442 is provided at the lower end of the material discharge slide 16. Hinged arms 161 are welded to both sides of the lower end of the material discharge slide 16, and hinge holes 162 are provided on the hinged arms 161. A hinge shaft 61 that passes through the hinge hole 162 is integrally provided on the side of the end of the cover 6. At this time, one end of the cover 6 can be hinged to the lower end of the material discharge slide 16. Meanwhile, a baffle 611 is welded to the end of the hinge shaft 61 on one side. A drive torsion spring 612 is provided on the baffle 611 and sleeved on the hinge shaft 61. One end of the drive torsion spring 612 is bonded and fixed to the baffle 611 and the other end is bonded and fixed to the hinge arm 161.

[0047] Referring to Figures 3, 4, 5, and 7, the unloading assembly 3 includes a column 31, a bushing 32, a connecting shaft 33, a push rod 34, and a drive component 35. The lower end of the column 31 is fixed to the frame 1 by bolts and is located on one side of the unloading slide 16. The bushing 32 is welded to the upper end of the column 31, and the connecting shaft 33 passes through the bushing 32. One end of the push rod 34 is welded to the end of the connecting shaft 33, and the other end is used to pass through the opening slot 22 and abut against the safety door in the assembly slot 21. The drive component 35 is set on the frame 1 and is used to drive the connecting shaft 33 to rotate intermittently. This drive component 35 includes a linkage gear 351, a linkage shaft 352, a first swing arm 353, a second swing arm 354, a return torsion spring 355, a guide wheel 356, a connecting rope 357, a fixed arm 358, a guide sleeve 359, a sliding arm 360, and a linkage arm 361. The linkage gear 351 also rotates through a shaft and bearings. Connected within the gearbox 5 and meshing with the driven gear 53, the outer diameter of the linkage gear 351 is smaller than that of the driven gear 53. Simultaneously, the lower end of the linkage shaft 352 is fixedly connected to the linkage gear 351, and the upper end extends to the upper side of the gearbox 5. The first swing arm 353 is welded to the linkage shaft 352. An extension column 3521 extending vertically upwards is integrally provided at the upper end of the linkage shaft 352, and a vibrating spring 35 is welded to the upper end of the extension column 3521. 22. At the same time, a vibrating ball 3523 is welded to one end of the vibrating spring 3522 away from the extension post 3521, and a vibrating ring 4421 for the vibrating ball 3523 to abut against is welded to the lower surface of the annular box 442. The vibrating ring 4421 has an integrally formed arc-shaped part 4422 that is recessed inward and for the vibrating ball 3523 to be embedded in on the side of the annular box 442. When the annular box 442 moves down, the vibrating ball 3523 enters the arc-shaped part 4422.

[0048] Referring to Figures 1 and 3, the second swing arm 354 is welded at one end to the end of the connecting shaft 33 away from the push rod 34, while the return torsion spring 355 is sleeved on the connecting shaft 33. One end of the return torsion spring 355 is bonded and fixed to the second swing arm 354, and the other end is bonded and fixed to the bushing 32. Two guide wheels 356 are provided and rotatably connected to the frame 1 through a support arm and a bearing. At the same time, the connecting rope 357 is tied and fixed at one end to the end of the second swing arm 354 away from the connecting shaft 33. The other end passes through two guide wheels 356, while the fixed arm 358 is fixed to the lower side of the frame 1 by bolts at one end. The guide sleeve 359 is welded to the end of the fixed arm 358 away from the frame 1, and the sliding arm 360 passes through the guide sleeve 359 at one end and is tied to the end of the connecting rope 357. At the same time, the linkage arm 361 is integrally set at the end of the sliding arm 360 away from the connecting rope 357 and is abutted by the first swing arm 353. At this time, the linkage arm 361 and the sliding arm 360 are L-shaped.

[0049] Principle: The first vibratory feeder 12 transports the safety doors one by one, and then the safety door conveying device 13 transports the safety doors into the assembly slots 21 on the assembly base 2. Then the turntable 11 rotates to rotate the assembly base 2 with the safety doors to the position of the spring conveying device 15. The spring conveying device 15 can then embed the springs transported one by one from the second vibratory feeder 14 into the safety doors, thereby completing the assembly of the safety doors and springs.

[0050] The turntable 11 then continues to rotate, thereby rotating the assembly base 2 with the safety door and spring to the position of the unloading assembly 3. The drive motor 52 drives the drive gear 51 to rotate. Since the drive gear 51 and the driven gear 53 mesh, the drive gear 51 drives the driven gear 53 to rotate. When the driven gear 53 rotates, it drives the linkage gear 351 to rotate. The linkage gear 351 then drives the linkage shaft 352 and the first swing arm 353 to rotate. After rotating one revolution, the first swing arm 353 drives the linkage arm 361 and the sliding arm 360 to move away from the frame 1. The second swing arm 354 is driven to swing by the connecting rope 357. The second swing arm 354 can drive the push rod 34 to swing, and the return torsion spring 355 is twisted. Thus, the lower end of the push rod 34 passes through the opening slot 22 and abuts against the safety door in the assembly slot 21. At this time, under the pushing force of the push rod 34, the safety door and spring that have been assembled in the assembly slot 21 can be pushed out of the assembly slot 21. Then the safety door can slide out along the material drop slide 16. At the same time, during the period when the first swing arm 353 is disengaged from the linkage arm 361, the elastic restoring force of the return torsion spring 355 can drive the second swing arm 354 and the push rod 34 to return to their original positions.

[0051] At this time, as the driven gear 53 drives the linkage gear 351 to rotate continuously, the linkage gear 351 can drive the first swing arm 353 to swing intermittently, and finally drive the second swing arm 354 and push rod 34 to swing intermittently through the connecting rope 357 and the linkage arm 361, thereby completing the unloading of the safety door in multiple assembly seats 2.

[0052] The turntable 43 uses guide holes 432 for guide posts 422 to pass through, and a connecting spring 423 is fitted on the guide post 422 to abut against the lower surface of the turntable 43. The connecting spring 423 can support the storage tray frame 44 on the turntable 43. As the number of safety doors in each storage box 45 gradually increases, the weight of the entire storage tray frame 44 increases, thereby pressing the turntable 43 downward. When the annular box 442 moves down to the point of disengagement from the cover 6, the cover 6 can flip upward under the elastic restoring force of the drive torsion spring 612 and close the discharge slide 16. At this time, it means that the specified number of safety doors to be collected has been collected in each storage box 45.

[0053] When security door accessories need to be packaged and transported, since the number of security doors in each storage box 45 is equal and the number of security doors in each storage box 45 meets the number of security doors required for each packing bag, the security doors in each storage box 45 can be directly packed without the need for separate counting operations. This makes it convenient to pack security door accessories quickly and accurately.

[0054] Simultaneously, when the storage box 45 is collecting the safety door, the vibrating ball 3523 strikes the vibrating ring 4421, and the knocking sound reminds the operator that the collection is in progress. When the ring box 442 moves down, causing the vibrating ball 3523 to enter the arc-shaped part 4422, the ring box 442 also separates from the cover 6. At this point, the collection of the safety door is complete in the storage box 45. Since the vibrating ball 3523 loses its knocking sound after entering the arc-shaped part 4422, this serves as a reminder to the operator that the collection is complete and the storage tray 44 needs to be replaced.

Claims

1. An automatic assembly device for a three-hole safety door, comprising a frame (1), a turntable (11) rotatably connected to the center of the frame (1), a plurality of assembly seats (2) disposed on the periphery of the upper surface of the turntable (11), an assembly slot (21) formed on the assembly seat (2), a first vibratory plate (12) disposed on one side of the frame (1) for conveying the safety door, a safety door conveying device (13) disposed on the frame (1) for driving the safety door conveyed in the first vibratory plate (12) into the assembly slot (21), a second vibratory plate (14) disposed on the frame (1) for conveying springs, and a spring conveying device (15) disposed on the frame (1) for driving the spring conveyed in the second vibratory plate (14) to be embedded in the safety door, characterized in that: It also includes a material unloading assembly (3) mounted on the frame (1) for pushing the assembled safety door and spring out of the assembly slot (21). The upper side of the assembly base (2) is provided with an opening slot (22) communicating with the assembly slot (21). The frame (1) is provided with a material drop slide (16) whose upper end is connected to the side of the turntable (11) and whose lower end extends downward to the outside of the frame (1). The material unloading assembly (3) includes a column (31) mounted on the frame (1) and located on one side of the material drop slide (16), a bushing (32) mounted on the upper end of the column (31), a connecting shaft (33) passing through the bushing (32), and one end connected to the end of the connecting shaft (33) and the other end used to pass through the opening slot (22) and abut against it. The system includes a push rod (34) on the safety gate, a drive component (35) mounted on the frame (1) for intermittently rotating the connecting shaft (33), and a receiving assembly (4) located outside the frame (1) for receiving the safety gate that slides down from the discharge chute (16). The receiving assembly (4) includes a base (41), a rotating shaft (42) mounted on the base (41), a turntable (43) mounted on the upper end of the rotating shaft (42), a receiving tray frame (44) placed on the turntable (43), and multiple receiving boxes (45) arranged around the receiving tray frame (44) for the safety gate to fall into. A gearbox (5) is mounted on the base (41), and a drive gear (5) is rotatably connected inside the gearbox (5). 1) A drive motor (52) with an output shaft connected to the drive gear (51) is fixed on the lower side of the gearbox (5). A driven gear (53) connected to the lower end of the rotating shaft (42) and meshing with the drive gear (51) is also rotatably connected inside the gearbox (5). The drive component (35) includes a linkage gear (351) rotatably connected inside the gearbox (5) and meshing with the driven gear (53), a linkage shaft (352) with its lower end connected to the linkage gear (351) and its upper end extending to the upper side of the gearbox (5), a first swing arm (353) set on the linkage shaft (352), a second swing arm (354) set at the end of the connecting shaft (33) away from the push rod (34), and a sleeve on the connecting shaft (33). A reset torsion spring (355) with one end connected to the second swing arm (354) and the other end connected to the bushing (32), two guide wheels (356) rotatably connected to the frame (1), a connecting rope (357) with one end connected to the second swing arm (354) away from the connecting shaft (33) and the other end passing through the two guide wheels (356), a fixed arm (358) set on the lower side of the frame (1), a guide sleeve (359) set at the end of the fixed arm (358), a sliding arm (360) with one end passing through the guide sleeve (359) and connected to the end of the connecting rope (357), and a linkage arm (361) set at the end of the sliding arm (360) away from the connecting rope (357) and for the first swing arm (353) to abut.

2. The automatic assembly equipment for a three-hole safety door according to claim 1, characterized in that: Four mounting arms (421) are provided on the periphery of the upper end of the rotating shaft (42). Guide posts (422) extending vertically upward are provided on the mounting arms (421). A central hole (431) for the rotating shaft (42) to pass through is provided at the center of the turntable (43). Guide holes (432) for the guide posts (422) to pass through are provided on the periphery of the central hole (431) of the turntable (43). A connecting spring (423) that abuts against the lower surface of the turntable (43) is sleeved on the guide post (422).

3. The automatic assembly equipment for a three-hole safety door according to claim 2, characterized in that: The storage tray rack (44) includes a rectangular sleeve (441) fitted around the four guide posts (422), an annular box (442) located outside the rectangular sleeve (441) and into which multiple storage boxes (45) are placed, and a connecting rod (443) disposed between the annular box (442) and the rectangular sleeve (441).

4. The automatic assembly equipment for a three-hole safety door according to claim 3, characterized in that: The material discharge chute (16) has a cross-section in the shape of a "U". The lower end of the material discharge chute (16) is provided with a cover (6) that abuts against the outer wall of the annular box (442). Both sides of the lower end of the material discharge chute (16) are provided with hinge arms (161). The hinge arms (161) are provided with hinge holes (162). The side of the end of the cover (6) is provided with a hinge shaft (61) that passes through the hinge hole (162). The end of the hinge shaft (61) on one side is provided with a baffle (611). The baffle (611) is provided with a drive torsion spring (612) that is sleeved on the hinge shaft (61) and has one end connected to the baffle (611) and the other end connected to the hinge arm (161).

5. The automatic assembly equipment for a three-hole safety door according to claim 4, characterized in that: The upper end of the linkage shaft (352) is provided with an extension column (3521) extending vertically upward. The upper end of the extension column (3521) is provided with a vibrating spring (3522). A vibrating ball (3523) is provided at the end of the vibrating spring (3522) away from the extension column (3521). A vibrating ring (4421) is provided on the lower surface of the annular box (442) for the vibrating ball (3523) to abut against.

6. The automatic assembly equipment for a three-hole safety door according to claim 5, characterized in that: The vibrating ring (4421) has an inwardly recessed arc-shaped part (4422) on the side near the annular box (442) for the vibrating ball (3523) to be inserted. When the annular box (442) moves down, the vibrating ball (3523) enters the arc-shaped part (4422).

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