Automatic assembly and testing device for square fuses

Abstract

The application provides an automatic assembly and detection device for square fuses, comprising a conveying mechanism, a copper strip processing mechanism, a transfer assembly and an assembly and detection assembly; the conveying mechanism is used for sequentially passing a continuous copper strip through the copper strip processing mechanism, the copper strip processing mechanism processes the copper strip into single separated copper sheets, and the conveying mechanism is further used for sequentially conveying the single copper sheets to the transfer assembly; the transfer assembly comprises a first rotary disc, a second rotary disc and a third rotary disc; through the arrangement of the first rotary disc, the second rotary disc and the third rotary disc, multiple processes arranged in a straight line are gathered at the periphery of the three rotary discs, and the first rotary disc, the second rotary disc and the third rotary disc realize the reduction of the occupied area of the entire machine.

Description

Technical Field

[0001] This invention relates to an automatic assembly and testing device for square fuses. Background Technology

[0002] A fuse is a protective device that protects electronic equipment from overcurrent and prevents serious damage caused by internal faults. Therefore, a fuse is also called a circuit breaker, and in international standards, it is defined as a "fuse element." It is an electrical component installed in a circuit to ensure its safe operation. With products becoming smaller and more integrated, the shape and size of fuses have changed significantly from traditional fuses. According to their structure, fuses can be classified as flat fuses, blade fuses, square fuses, and surface mount fuses. A square fuse includes a copper strip as the fusible element, a lower housing, and a top cover. The internal copper strip has two terminals, corresponding to two holes at the bottom of the lower housing. During installation, the copper strip is placed on the lower housing, and its two terminals are inserted into the corresponding holes. The copper strip and the lower housing are secured with a snap-fit ​​structure. The top cover is then installed on top of the lower housing. Currently, the assembly process of square fuses involves multiple steps, and these steps cannot be automated or coordinated continuously. Some steps require manual operation of equipment. This assembly method not only results in high labor intensity but also low assembly efficiency and unstable quality, leading to high costs and reduced competitiveness. Although automated assembly and inspection devices have emerged in the existing technology, these devices involve numerous steps and are typically arranged sequentially along a conveyor direction, with corresponding mechanisms for each step on one or both sides of the conveyor direction. This arrangement results in a large footprint for the entire machine and is unsuitable for transporting assembly and inspection devices with multiple steps. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic assembly and testing device for square fuses.

[0004] To solve the above-mentioned technical problems, the present invention provides an automatic assembly and testing device for square fuses, comprising: a conveying mechanism, a copper strip processing mechanism, a transfer component, and an assembly and testing component;

[0005] The conveying mechanism is used to sequentially pass a continuous copper strip through the copper strip processing mechanism, which processes the copper strip into individual separated copper sheets. The conveying mechanism is also used to sequentially convey the individual copper sheets to the transfer assembly.

[0006] The transfer assembly includes a first turntable, a second turntable, and a third turntable;

[0007] The first turntable has four first receiving seats evenly spaced along its circumference. The assembly detection component includes a first visual inspection and sorting device, a bending device, and a pressing device. The first turntable rotates so that the four first receiving seats sequentially and synchronously correspond to the receiving position, the first visual inspection and sorting device, the bending device, and the pressing device. The conveying mechanism is used to convey the single copper sheet to the first receiving seat located at the receiving position. The single copper sheet sequentially corresponds to the first visual inspection and sorting device, the bending device, and the pressing device. When corresponding to the bending device, the copper sheet is bent into a U-shape by the bending device.

[0008] The second turntable has eight second receiving seats evenly spaced along its circumference. The assembly and testing assembly includes a lower seat conveying device, a hole-expanding device, an ejection device, an ejection sorting device, a resistance testing device, a disk shifting device, and a resistance sorting device. The second turntable rotates so that the eight second receiving seats sequentially and synchronously correspond to the first feeding position, the pressing position, the hole-expanding device, the ejection device, the ejection sorting device, the resistance testing device, the disk shifting device, and the resistance sorting device. The lower seat conveying device is used to transport the lower seat of the square fuse to the second receiving seat at the first feeding position. The pressing position is located directly below the pressing device. The pressing device is used to press the U-shaped copper sheet from the first turntable onto the lower seat of the second receiving seat located at the pressing position.

[0009] The third turntable has eight third receiving seats evenly spaced around its circumference. The assembly inspection component includes an assembly visual inspection device, an assembly sorting device, a top cover conveying device, a top cover inspection device, a take-out device, and a cover sorting device. The third turntable rotates so that the eight third receiving seats sequentially and synchronously correspond to the second feeding position, the assembly visual inspection device, the assembly sorting device, the top cover feeding position, the top cover inspection device, the take-out device, and the cover sorting device. When corresponding to the disc shifting device, the disc shifting device moves the lower seat with the U-shaped copper sheet to the third receiving seat at the second feeding position. The top cover conveying device is used to transport the top cover of the square fuse to the lower seat on the third receiving seat. The lower seat with the top cover is taken out by the take-out device when corresponding to the take-out device.

[0010] The automatic assembly and inspection device also includes a semi-finished product shifting device, a welding device, a welding visual inspection device, a welding defective product removal device, a laser marking device, and a finished product counting device. The semi-finished product shifting device is used to receive the lower seat with the upper cover from the removal device and drive it to sequentially correspond to the welding device, the welding visual inspection device, the welding defective product removal device, the laser marking device, and the finished product counting device to output the finished product. The welding device is used to weld the upper cover and the lower seat.

[0011] In a preferred embodiment, the first turntable is at least partially located above the first turntable, and the tablet pressing position is located in the overlapping area of ​​the first and second turntables.

[0012] In a preferred embodiment, the second turntable and the second turntable are on the same horizontal plane. The disc shifting device includes a swing arm seat and an acquisition mechanism. The acquisition mechanism is disposed on the swing arm seat. The swing arm seat swings to drive the acquisition mechanism to correspond to the second receiving seat or the third receiving seat. The acquisition mechanism is used to acquire and release the lower seat.

[0013] In a preferred embodiment, the lower seat conveying device includes a first vibratory plate, a lower seat track, and a lower seat shifting mechanism. The first vibratory plate is used to convey the lower seat to the lower seat track. The lower seats are conveyed in a straight line on the lower seat track to the end of the lower seat track. The lower seat shifting mechanism is used to shift the lower seat at the end of the lower seat track to a second receiving seat.

[0014] The hole enlarging device includes a hole enlarging limiting member, a hole enlarging member, and a hole enlarging driving member. The hole enlarging limiting member is located above the second receiving seat to restrict the copper sheet in the lower seat from moving upward. The hole enlarging driving member drives the hole enlarging member to extend from the lower side of the second receiving seat to insert into two holes at the bottom of the lower seat to enlarge the two terminals of the copper sheet in the lower seat.

[0015] The ejection device includes an ejection limiting member, an ejection member, and an ejection driving member. The ejection limiting member is located above the second receiving seat to restrict the lower seat from moving upward. The ejection driving member drives the ejection member to extend from the lower side of the second receiving seat to insert into two holes at the bottom of the lower seat, thereby driving the copper sheet inside the lower seat to move upward a certain distance.

[0016] The ejector sorting device is used to remove defective products detected by the ejector device from the second receiving seat;

[0017] The resistance testing device includes a first electrode and a second electrode that are close to each other. The first electrode extends into the upper opening of the lower base to connect with the copper sheet, and the second electrode is inserted into the two holes at the bottom of the lower base to connect with the two terminals of the copper sheet to test the resistance of the copper sheet.

[0018] The resistance sorting device is used to remove defective products detected by the resistance testing device from the second receiving base.

[0019] In a preferred embodiment, the first visual inspection and sorting device is used to detect defective products and remove them;

[0020] The bending device includes a bending element that moves vertically and a pushing element that moves radially.

[0021] The first receiving seat includes a bending position and a pressing position distributed radially along the first turntable. When the copper sheet on the first receiving seat corresponds to the bending device, the bending member moves downward to bend the copper sheet, and the pushing member pushes the bent copper sheet from the bending position to the pressing position. The pressing position corresponds to a through hole that extends vertically.

[0022] The pressing device includes a pressing member that moves up and down. The pressing member moves downward to push the bent copper sheet through the through hole and move it to the lower seat on the second receiving seat.

[0023] In a preferred embodiment, the assembly visual inspection device is used to detect defective products in the assembly of the lower seat and the copper sheet so that the defective products can be removed by the assembly sorting device.

[0024] The cover conveying device includes a second vibrating plate, a cover track, and a cover shifting mechanism. The second vibrating plate is used to convey the cover to the cover track. The cover is conveyed in a straight line on the cover track to the end of the cover track. The cover shifting mechanism is used to shift the cover at the end of the cover track to the upper opening of the lower seat on the third receiving seat.

[0025] The top cover detection device is used to detect whether the top cover is placed on the lower seat, and the cover sorting device is used to remove the lower seat without the top cover.

[0026] In a preferred embodiment, the copper strip processing mechanism includes a soldering device, a soldering visual inspection mechanism, a cleaning device, a drying device, and a copper sheet cutting device. The soldering device, the soldering visual inspection mechanism, the cleaning device, the drying device, and the copper sheet cutting device are arranged sequentially along the conveying direction of the conveying mechanism, and each performs a corresponding process on the copper strip conveyed by the conveying mechanism.

[0027] In a preferred embodiment, the conveying mechanism includes a turntable continuous tape feeding device, a shaping device, and a positioning pin copper tape feeding device, which are sequentially distributed along the conveying direction. The positioning pin copper tape feeding device is located between the soldering device and the soldering visual inspection mechanism. The shaping device is located between the soldering device and the turntable continuous tape feeding device and shapes the copper tape conveyed by the turntable continuous tape feeding device.

[0028] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0029] By setting up the first, second, and third turntables, multiple processes arranged in a straight line are gathered around the three turntables, thereby reducing the overall footprint of the machine. Attached Figure Description

[0030] Figure 1 This is one of the perspective schematic diagrams of an automatic assembly and testing device for square fuses in a preferred embodiment of the present invention;

[0031] Figure 2 This is a second perspective view of the automatic assembly and testing device for square fuses in a preferred embodiment of the present invention;

[0032] Figure 3 This is a top view of the automatic assembly and detection device for square fuses in a preferred embodiment of the present invention;

[0033] Figure 4 This is a three-dimensional schematic diagram of the single-chip delivery device in a preferred embodiment of the present invention;

[0034] Figure 5 This is a three-dimensional schematic diagram of the first turntable in a preferred embodiment of the present invention;

[0035] Figure 6 This is a three-dimensional schematic diagram of the first visual detection and sorting device in a preferred embodiment of the present invention;

[0036] Figure 7 This is a perspective view of the bending device in a preferred embodiment of the present invention;

[0037] Figure 8 This is a three-dimensional schematic diagram of the tableting device, the first turntable, and the second turntable in a preferred embodiment of the present invention;

[0038] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0039] Figure 10 This is a perspective view of the lower conveyor device and the second turntable in a preferred embodiment of the present invention;

[0040] Figure 11 This is a three-dimensional schematic diagram of the hole-expanding device in a preferred embodiment of the present invention;

[0041] Figure 12 This is a perspective view of the ejection device in a preferred embodiment of the present invention;

[0042] Figure 13 This is a perspective view of the ejector sorting device in a preferred embodiment of the present invention;

[0043] Figure 14 This is a three-dimensional schematic diagram of the resistance testing device in a preferred embodiment of the present invention;

[0044] Figure 15 This is a three-dimensional schematic diagram of the disk shifting device in a preferred embodiment of the present invention;

[0045] Figure 16 This is a three-dimensional schematic diagram of the third turntable in a preferred embodiment of the present invention;

[0046] Figure 17 This is a perspective view of the cover conveying device in a preferred embodiment of the present invention;

[0047] Figure 18 This is a perspective view of the removal device in a preferred embodiment of the present invention;

[0048] Figure 19 This is a three-dimensional schematic diagram of the semi-finished product shifting device in a preferred embodiment of the present invention;

[0049] Figure 20 This is a three-dimensional schematic diagram of the welding device in a preferred embodiment of the present invention. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] An automated assembly and testing device for square fuses includes a conveying mechanism, a copper strip handling mechanism, a transfer assembly, and an assembly and testing assembly.

[0052] The conveying mechanism is used to sequentially pass a continuous copper strip through the copper strip processing mechanism, which processes the copper strip into individual separated copper sheets. The conveying mechanism is also used to sequentially convey the individual copper sheets to the transfer assembly.

[0053] The copper strip processing mechanism includes a soldering device 21, a soldering visual inspection mechanism 22, a cleaning device 23, a drying device 24, and a copper sheet cutting device 25. These devices are arranged sequentially along the conveying direction of the conveying mechanism, and each performs a corresponding process on the copper strip conveyed by the conveying mechanism. The conveying mechanism includes a turntable continuous strip feeding device 11, a shaping device, and a positioning pin copper strip feeding device 13. These devices are distributed sequentially along the conveying direction. The positioning pin copper strip feeding device 13 is located between the soldering device 21 and the soldering visual inspection mechanism 22. The shaping device is located between the soldering device 21 and the turntable continuous strip feeding device 11 and shapes the copper strip conveyed by the turntable continuous strip feeding device 11. In this embodiment, the soldering device 21, soldering visual inspection mechanism 22, cleaning device 23, drying device 24, and copper sheet cutting device 25 are identical to those described in the applicant's Chinese invention patent application publication CN114334552A, which is incorporated herein by reference.

[0054] In this embodiment, the conveying mechanism includes a conveying track 14 and a single-piece feeding device 15. The copper strip undergoes multiple processes to form a single copper sheet and is conveyed on the conveying track 14 to its end. The single-piece feeding device 15 is used to pick up the single copper sheet located at the end of the conveying track 14 and convey it to the transfer assembly. The single-piece feeding device 15 includes a sliding cylinder 151, a lifting cylinder 152, and a gripper cylinder 153. The sliding cylinder 151 is mounted between the conveying track 14 and the first turntable 31 of the transfer assembly. The lifting cylinder 152 is connected to the sliding table of the sliding cylinder 151. The gripper cylinder 153 is connected to the lifting cylinder 152 to achieve vertical sliding. The gripper cylinder 153 is used to clamp the single copper sheet located on the conveying track 14.

[0055] The transfer assembly includes a first turntable 31, a second turntable 32, and a third turntable 33. The first turntable 31, the second turntable 32, and the third turntable 33 are all rotatable.

[0056] The first turntable 31 is provided with four first receiving seats 311 evenly spaced along the circumference. The assembly detection component includes a first visual inspection and sorting device 41, a bending device 42, and a pressing device 43. The first turntable 31 rotates so that the four first receiving seats 311 sequentially and synchronously correspond to the receiving position, the first visual inspection and sorting device, the bending device 42, and the pressing device 43. The conveying mechanism is used to convey the single copper sheet to the first receiving seat located at the receiving position. The single copper sheet sequentially corresponds to the first visual inspection and sorting device, the bending device 42, and the pressing device 43. When corresponding to the bending device 42, the copper sheet is bent into a U-shape by the bending device 42. The first visual inspection and sorting device 41 is used to detect defective products and remove them; the bending device 42 includes a bending member 421 that moves vertically and a pushing member 422 that moves radially; the first receiving seat 311 includes a bending position and a pressing position distributed radially along the first turntable 31. When the copper sheet on the first receiving seat 311 corresponds to the bending device 42, the bending member 421 moves downward to bend the copper sheet, and the pushing member 422 pushes the bent copper sheet from the bending position to the pressing position. The pressing position corresponds to the through hole 3113 that passes vertically; the pressing device 43 includes a pressing member 431 that moves vertically. The pressing member 431 moves downward to push the bent copper sheet through the through hole 3113 to the lower seat on the second receiving seat 321.

[0057] In this embodiment, the first visual inspection and sorting device 41 includes a first visual inspection component 411 and a sorting component 412. The first visual inspection component 411 compares and analyzes the copper sheet by taking pictures and recognizing it with a camera. The sorting component 412 is used to take the copper sheet out to the defective product box. The specific structure of the sorting component 412 can be referred to the single-piece feeding device 15, and will not be described again here.

[0058] The bending member 421 of the bending device 42 is driven by a cylinder to move downwards. The first receiving seat 311 has a radially extending crossbar 3114 at the bending position. The middle portion of the copper sheet is supported on the crossbar 3114, with both sides of the copper sheet suspended. The bending member 421 presses against both sides of the copper sheet to bend it into an inverted U-shape. The pushing member 422 is driven by a cylinder to move outwards, pushing the bent copper sheet to the pressing position. The pressing member 431 is driven by a cylinder to move downwards, pushing the bent copper sheet through the through hole 3113 to the lower seat on the second receiving seat 321.

[0059] The second turntable 32 has eight second receiving seats 321 evenly spaced along its circumference. The assembly and testing assembly includes a lower seat conveying device 44, a hole expanding device 45, an ejection device 46, an ejection sorting device 47, a resistance testing device 48, a disk shifting device 49, and a resistance sorting device 50. The second turntable 32 rotates so that the eight second receiving seats 321 sequentially and synchronously correspond to the first feeding position, the pressing position, the hole expanding device 45, the ejection device 46, the ejection sorting device 47, the resistance testing device 48, the disk shifting device 49, and the resistance sorting device 50. The lower seat conveying device 44 is used to convey the lower seat of the square fuse to the second receiving seat 321 at the first feeding position. The pressing position is located directly below the pressing device 43. The pressing device 43 is used to press the U-shaped copper sheet from the first turntable 31 onto the lower seat on the second receiving seat 321 located at the pressing position. The first turntable 31 and the second turntable 32 rotate synchronously so that each rotation at a certain angle can make the first receiving seat 311 and the second receiving seat 321 synchronously correspond to the pressing position in the vertical direction.

[0060] The lower seat conveying device 44 includes a first vibratory plate 441, a lower seat track 442, and a lower seat shifting mechanism 443. The first vibratory plate 441 is used to convey the lower seat to the lower seat track 442. The lower seat is conveyed in a straight line on the lower seat track 442 to the end of the lower seat track 442. The lower seat shifting mechanism 443 is used to shift the lower seat at the end of the lower seat track 442 to the second receiving seat 321.

[0061] The hole-expanding device 45 includes a hole-expanding limiting member 451, a hole-expanding member 452, and a hole-expanding driving member 453. The hole-expanding limiting member 451 is located above the second receiving seat 321 to restrict the upward movement of the copper sheet in the lower seat. The hole-expanding driving member 453 drives the hole-expanding member 452 to extend from the lower side of the second receiving seat 321 and insert it into two holes at the bottom of the lower seat to expand the holes at the two terminals of the copper sheet in the lower seat. In this embodiment, the hole-expanding driving member 453 is a cylinder.

[0062] The ejection device 46 includes an ejection limiting member 461, an ejector member 462, and an ejection driving member 463. The ejection limiting member 461 is located above the second receiving seat 321 to restrict the upward movement of the lower seat. The ejection driving member 463 drives the ejector member 462 to extend from the lower side of the second receiving seat 321 and insert it into two holes at the bottom of the lower seat, thereby moving the copper sheet inside the lower seat upward a certain distance. The ejection sorting device 47 is used to remove defective products detected by the ejection device 46 from the second receiving seat 321. The structure of the ejection sorting device 47 can be referred to the single-piece feeding device 15.

[0063] The resistance testing device 48 includes a first electrode 481 and a second electrode 482 that are close to each other. The first electrode 481 extends into the upper opening of the lower seat to connect with the copper sheet, and the second electrode 482 is inserted into the two holes at the bottom of the lower seat to connect with the two terminals of the copper sheet to test the resistance of the copper sheet. The resistance sorting device 50 is used to remove the defective products tested by the resistance testing device 48 from the second receiving seat 321. The structure of the resistance sorting device 50 can refer to the single-piece feeding device 15.

[0064] The third turntable 33 has eight third receiving seats 331 evenly spaced along its circumference. The assembly inspection component includes an assembly visual inspection device 51, an assembly sorting device 52, a cover conveying device 53, a cover inspection device 54, a take-out device 55, and a cover sorting device 56. The third turntable 33 rotates so that the eight third receiving seats 331 sequentially and synchronously correspond to the second feeding position, the assembly visual inspection device 51, the assembly sorting device 52, the cover feeding position, the cover inspection device 54, the take-out device 55, and the cover sorting device 56. When corresponding to the disc shifting device 49, the disc shifting device 49 moves the lower seat with the U-shaped copper sheet to the third receiving seat 331 at the second feeding position. The cover conveying device is used to transport the cover of the square fuse to the lower seat on the third receiving seat 331. The lower seat with the cover is taken out by the take-out device 55 when corresponding to the take-out device 55.

[0065] The assembly visual inspection device 51 detects defective products assembled with the copper sheet using a camera, and removes the defective products by the assembly sorting device 52. The top cover conveying device 53 includes a second vibrating plate 531, a top cover track 532, and a top cover shifting mechanism 533. The second vibrating plate 531 is used to convey the top cover to the top cover track 532. The top cover is conveyed in a straight line on the top cover track 532 to the end of the top cover track 532. The top cover shifting mechanism 533 is used to shift the top cover at the end of the top cover track 532 to the upper opening of the bottom seat on the third receiving seat 331. The top cover shifting mechanism 533 can also refer to the single-piece feeding device 15. The top cover detection device 54 is used to detect whether the top cover is placed on the bottom seat. The top cover detection device 54 can be a photoelectric switch. The cover sorting device 56 is used to remove the bottom seat without the top cover. The structure of the cover sorting device 56 can refer to the single-piece feeding device 15.

[0066] The automatic assembly and inspection device also includes a semi-finished product shifting device 57, a welding device 58, a welding visual inspection device 59, a welding defective product removal device 60, a laser marking device 61, and a finished product counting device 62. The semi-finished product shifting device 57 is used to receive the lower seat with the upper cover from the removal device 55 so as to drive it to sequentially correspond to the welding device 58, the welding visual inspection device 59, the welding defective product removal device 60, the laser marking device 61, and the finished product counting device 62 to output the finished product. The welding device 58 is used to weld the upper cover and the lower seat.

[0067] The semi-finished product shifting device 57 includes a shifting track 571, a linear drive 572, a connecting plate 573, a clamping plate 574, and a transverse drive 575. The shifting track 571 receives a lower seat covered with an upper cover. The linear drive 572 is a cylinder, and its drive shaft is connected to the connecting plate 573. The transverse drive 575 consists of multiple cylinders connected to the connecting plate 573. The drive shaft of the transverse drive 575 is connected to the clamping plate 574, which has multiple slots for transversely clamping the semi-finished product located on the shifting track 571. The driving direction of the linear drive 572 is the same as the conveying direction of the shifting track 571, and the driving direction of the transverse drive 575 is perpendicular to the conveying direction of the shifting track 571. When the semi-finished product on the shifting track 571 is shifted step by step, the linear drive 572 first drives the connecting plate 573 to the first step position, the transverse drive 575 drives the clamping plate 574 to engage with the semi-finished product, and then the linear drive 572 drives the connecting plate 573 to the second step position. At this time, the semi-finished product on the shifting track 571 moves forward by one step distance. This process is repeated so that the semi-finished product can move step distances on the shifting track 571 in sequence.

[0068] The welding device 58 is disposed above the shifting track 571. The welding device 58 is a conventional hot-melt welding device. The lower base includes four protrusions, and the upper cover includes four through slots corresponding to the four protrusions. The four protrusions extend beyond the four through slots. The welding device 58 includes a hot-pressing plate 581, which is driven by a cylinder to move downwards and press against the protrusions. The hot-pressing plate 581 heats the protrusions, causing them to melt and weld to the upper cover. The welding visual inspection device 59 identifies defective products using a camera, and the defective product removal device 60 removes the defective product. The laser marking device 61 laser-marks the semi-finished products on the shifting track 571.

[0069] The first turntable 31 is at least partially located above the first turntable 31, and the pressing position is located in the overlapping area of ​​the first turntable 31 and the second turntable 32. The second turntable 32 is on the same horizontal plane. The disc shifting device 49 includes a swing arm seat 491 and a picking mechanism 492. The picking mechanism 492 is disposed on the swing arm seat 491. The swing arm seat 491 swings to drive the picking mechanism 492 to correspond to the second receiving seat 321 or the third receiving seat 331. The picking mechanism 492 is used to pick up and release the lower seat. The picking mechanism 492 can be connected to the end of the swing arm seat 491 by a lifting cylinder. The picking mechanism 492 can be a gripper or a suction cup, etc.

[0070] During automatic inspection and assembly, the conveying mechanism transports the copper strip to the single-piece feeding device 15, thereby forming a single copper sheet. The single-piece feeding device 15 transports the copper sheet to the first receiving seat 311. The first turntable 31 drives the first receiving seat 311 with the copper sheet to move sequentially to the first visual inspection and sorting device, bending device 42, and pressing device 43. When it is located at the pressing device 43, the pressing component 431 presses the bent copper sheet onto the lower seat located on the second receiving seat 321. The second receiving seat 321 with the lower seat and the bent copper sheet sequentially corresponds to the hole enlarging device 45, the ejection device 46, the ejection sorting device 47, the resistance testing device 48, and the disc shifting device 49. The disc shifting device 49 transfers the good product to the third receiving seat 331 on the third turntable 33, and the resistance testing device 48 measures the resistance. Defective products are removed by the resistance sorting device 50. The third turntable 33 rotates so that the eight third receiving seats 331 sequentially and synchronously correspond to the second feeding position, the assembly visual inspection device 51, the assembly sorting device 52, the top cover feeding position, the top cover inspection device 54, the removal device 55, and the cover sorting device 56. When corresponding to the disc shifting device 49, the disc shifting device 49 moves the lower seat with the U-shaped copper sheet to the third receiving seat 331 at the second feeding position. The top cover transmission device is used to transport the top cover of the square fuse to the lower seat on the third receiving seat 331. The lower seat with the top cover is removed by the removal device 55 when corresponding to the removal device 55. The semi-finished product shifting device 57 receives the lower seat with the top cover from the removal device 55 and drives it to sequentially correspond to the welding device 58, the welding visual inspection device 59, the welding defective product removal device 60, the laser marking device 61, and the finished product counting device 62 to output the finished product.

[0071] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An automatic assembly and testing device for square fuses, characterized in that, include: Conveying mechanism, copper strip handling mechanism, transfer components, and assembly and testing components; The conveying mechanism is used to sequentially pass a continuous copper strip through the copper strip processing mechanism, which processes the copper strip into individual separated copper sheets. The conveying mechanism is also used to sequentially convey the individual copper sheets to the transfer assembly. The transfer assembly includes a first turntable, a second turntable, and a third turntable; The first turntable has four first receiving seats evenly spaced along its circumference. The assembly detection component includes a first visual inspection and sorting device, a bending device, and a pressing device. The first turntable rotates so that the four first receiving seats sequentially and synchronously correspond to the receiving position, the first visual inspection and sorting device, the bending device, and the pressing device. The conveying mechanism is used to convey the single copper sheet to the first receiving seat located at the receiving position. The single copper sheet sequentially corresponds to the first visual inspection and sorting device, the bending device, and the pressing device. When corresponding to the bending device, the copper sheet is bent into a U-shape by the bending device. The second turntable has eight second receiving seats evenly spaced along its circumference. The assembly and testing assembly includes a lower seat conveying device, a hole-expanding device, an ejection device, an ejection sorting device, a resistance testing device, a disk shifting device, and a resistance sorting device. The second turntable rotates so that the eight second receiving seats sequentially and synchronously correspond to the first feeding position, the pressing position, the hole-expanding device, the ejection device, the ejection sorting device, the resistance testing device, the disk shifting device, and the resistance sorting device. The lower seat conveying device is used to transport the lower seat of the square fuse to the second receiving seat at the first feeding position. The pressing position is located directly below the pressing device. The pressing device is used to press the U-shaped copper sheet from the first turntable onto the lower seat of the second receiving seat located at the pressing position. The third turntable has eight third receiving seats evenly spaced around its circumference. The assembly inspection component includes an assembly visual inspection device, an assembly sorting device, a top cover conveying device, a top cover inspection device, a take-out device, and a cover sorting device. The third turntable rotates so that the eight third receiving seats sequentially and synchronously correspond to the second feeding position, the assembly visual inspection device, the assembly sorting device, the top cover feeding position, the top cover inspection device, the take-out device, and the cover sorting device. When corresponding to the disc shifting device, the disc shifting device moves the lower seat with the U-shaped copper sheet to the third receiving seat at the second feeding position. The top cover conveying device is used to transport the top cover of the square fuse to the lower seat on the third receiving seat. The lower seat with the top cover is taken out by the take-out device when corresponding to the take-out device. The automatic assembly and inspection device also includes a semi-finished product shifting device, a welding device, a welding visual inspection device, a welding defective product removal device, a laser marking device, and a finished product counting device. The semi-finished product shifting device is used to receive the lower seat with the upper cover from the removal device and drive it to sequentially correspond to the welding device, the welding visual inspection device, the welding defective product removal device, the laser marking device, and the finished product counting device to output the finished product. The welding device is used to weld the upper cover and the lower seat.

2. The automatic assembly and testing device for a square fuse as described in claim 1, characterized in that: The first turntable is at least partially located above the first turntable, and the tablet pressing position is located in the overlapping area of ​​the first turntable and the second turntable.

3. The automatic assembly and testing device for a square fuse as described in claim 2, characterized in that: The second turntable and the second turntable are on the same horizontal plane. The disc shifting device includes a swing arm seat and a getting mechanism. The getting mechanism is disposed on the swing arm seat. The swing arm seat swings to drive the getting mechanism to correspond to the second receiving seat or the third receiving seat. The getting mechanism is used to get and release the lower seat.

4. The automatic assembly and testing device for a square fuse as described in claim 1, characterized in that: The lower seat conveying device includes a first vibrating plate, a lower seat track, and a lower seat shifting mechanism. The first vibrating plate is used to convey the lower seat to the lower seat track. The lower seats are arranged in a straight line on the lower seat track and conveyed to the end of the lower seat track. The lower seat shifting mechanism is used to shift the lower seat at the end of the lower seat track to a second receiving seat. The hole enlarging device includes a hole enlarging limiting member, a hole enlarging member, and a hole enlarging driving member. The hole enlarging limiting member is located above the second receiving seat to restrict the copper sheet in the lower seat from moving upward. The hole enlarging driving member drives the hole enlarging member to extend from the lower side of the second receiving seat to insert into two holes at the bottom of the lower seat to enlarge the two terminals of the copper sheet in the lower seat. The ejection device includes an ejection limiting member, an ejection member, and an ejection driving member. The ejection limiting member is located above the second receiving seat to restrict the lower seat from moving upward. The ejection driving member drives the ejection member to extend from the lower side of the second receiving seat to insert into two holes at the bottom of the lower seat, thereby driving the copper sheet inside the lower seat to move upward a certain distance. The ejector sorting device is used to remove defective products detected by the ejector device from the second receiving seat; The resistance testing device includes a first electrode and a second electrode that are close to each other. The first electrode extends into the upper opening of the lower base to connect with the copper sheet, and the second electrode is inserted into the two holes at the bottom of the lower base to connect with the two terminals of the copper sheet to test the resistance of the copper sheet. The resistance sorting device is used to remove defective products detected by the resistance testing device from the second receiving base.

5. The automatic assembly and testing device for a square fuse as described in claim 1, characterized in that: The first visual inspection and sorting device is used to detect defective products and remove them; The bending device includes a bending element that moves vertically and a pushing element that moves radially. The first receiving seat includes a bending position and a pressing position distributed radially along the first turntable. When the copper sheet on the first receiving seat corresponds to the bending device, the bending member moves downward to bend the copper sheet, and the pushing member pushes the bent copper sheet from the bending position to the pressing position. The pressing position corresponds to a through hole that extends vertically. The pressing device includes a pressing member that moves up and down. The pressing member moves downward to push the bent copper sheet through the through hole and move it to the lower seat on the second receiving seat.

6. The automatic assembly and testing device for a square fuse as described in claim 1, characterized in that: The assembly visual inspection device is used to detect defective products in the assembly of the lower seat and the copper sheet so that the defective products can be removed by the assembly sorting device. The cover conveying device includes a second vibrating plate, a cover track, and a cover shifting mechanism. The second vibrating plate is used to convey the cover to the cover track. The cover is conveyed in a straight line on the cover track to the end of the cover track. The cover shifting mechanism is used to shift the cover at the end of the cover track to the upper opening of the lower seat on the third receiving seat. The top cover detection device is used to detect whether the top cover is placed on the lower seat, and the cover sorting device is used to remove the lower seat without the top cover.

7. The automatic assembly and testing device for a square fuse as described in claim 1, characterized in that: The copper strip processing mechanism includes a soldering device, a soldering visual inspection mechanism, a cleaning device, a drying device, and a copper sheet cutting device. The soldering device, the soldering visual inspection mechanism, the cleaning device, the drying device, and the copper sheet cutting device are arranged sequentially along the conveying direction of the conveying mechanism, and each performs the corresponding process on the copper strip conveyed by the conveying mechanism.

8. The automatic assembly and testing device for a square fuse as described in claim 7, characterized in that: The conveying mechanism includes a turntable continuous strip feeding device, a shaping device, and a positioning pin copper strip feeding device. The turntable continuous strip feeding device, the shaping device, and the positioning pin copper strip feeding device are distributed sequentially along the conveying direction. The positioning pin copper strip feeding device is located between the soldering device and the soldering visual inspection mechanism. The shaping device is located between the soldering device and the turntable continuous strip feeding device and shapes the copper strip conveyed by the turntable continuous strip feeding device.

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