Assembling equipment and assembling method based on key chain drilling

Abstract

The invention relates to the technical field of key chain assembling equipment, and discloses assembling equipment and an assembling method based on key chain drilling. When the transfer material tray sequentially passes through all the assembling stations, the processes of part putting, part drilling, part assembling, part riveting into workpieces and workpiece outputting can be sequentially conducted; after the transfer trays are output from the discharging mechanism at the tail end of the stepping conveying mechanism, the transfer trays can be moved to the feeding mechanism at the head end of the stepping conveying mechanism along the reset conveying mechanism again, the assembling process of each transfer tray is circularly carried out, and therefore all the assembling steps can be sequentially and continuously completed in the continuous circulating process, and the assembling efficiency is improved. According to the workpiece assembling device, the workpiece can be rapidly assembled, it can be guaranteed that assembling is conducted under effective positioning in the follow-up assembling process by only fixing the position of each assembling station in the initial stage, so that the time-consuming positioning problem in the conventional assembling process is avoided, and the workpiece assembling efficiency can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of key chain assembly equipment, in particular to an assembly equipment and an assembly method based on key chain drilling. Background Art

[0002] In today's industrial production and manufacturing, equipment assembly is a vital link. As various products develop towards precision, complexity and multi-functionality, the requirements for assembly equipment and assembly methods are also increasing. Traditional assembly equipment often has many limitations. For example, in terms of mechanical parts assembly, many equipment lack flexibility. For parts of different shapes, sizes and materials, different specialized equipment is required for assembly, which leads to a significant increase in the cost of equipment procurement and management for enterprises.

[0003] In the current manufacturing industry, the assembly of small objects such as key chains often relies on manual operation. Taking drilling and subsequent assembly steps as an example, workers need to use handheld drilling tools to drill holes in key chains, which is not only slow but also difficult to ensure accuracy. Since manual operation is easily affected by factors such as fatigue and emotions, the quality of key chain drillings processed by different workers varies, which may lead to adaptability problems in the subsequent assembly process, such as the inability to accurately screw screws into the drilled holes.

[0004] With the trend of manufacturing industry towards automation and intelligence, there is a lack of efficient automated assembly equipment for the relatively simple but large-volume production process of keychain assembly. Existing automation technology has made great progress in the assembly of large products, but there is relatively little research on the assembly automation of small consumer products such as keychains. Existing automation equipment often cannot adapt well to the small shape of keychains, different materials (such as metal, plastic, etc.) and diverse design requirements. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an assembly device and an assembly method based on keychain drilling.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: An assembly device comprises an installation frame, wherein a stepping conveying mechanism and a reset conveying mechanism are arranged on the top of the installation frame, the head end of the stepping conveying mechanism is connected to the tail end of the reset conveying mechanism, and the tail end of the stepping conveying mechanism is connected to the head end of the reset conveying mechanism; a plurality of assembly stations are arranged on the side of the stepping conveying mechanism away from the reset conveying mechanism, and a conveying loop for each transfer tray to circulate through each assembly station is formed between the stepping conveying mechanism and the reset conveying mechanism; each assembly station from the head end of the stepping conveying mechanism to the tail end of the stepping conveying mechanism is sequentially provided with a placing mechanism, a drilling mechanism, a The step conveyor mechanism comprises an assembly mechanism, a riveting mechanism and a discharging mechanism; driven by the step conveyor mechanism, the transfer tray can sequentially carry out the process of delivering parts, drilling parts, assembling parts, riveting parts into workpieces and outputting workpieces when passing through each assembly station in sequence; after the transfer tray is output from the discharging mechanism at the tail end of the step conveyor mechanism, it can be moved back to the delivering mechanism at the head end of the step conveyor mechanism along the reset conveyor mechanism; driven by the reset conveyor mechanism and the step conveyor mechanism respectively, the time taken to move from the discharging mechanism to the delivering mechanism is the same as the time taken to move from the previous assembly station to the next assembly station.

[0007] Preferably, each of the transfer trays is provided with an assembly groove and a plurality of receiving grooves at the top, the delivery mechanism includes a plurality of vibrating loading trays, a delivery track is provided on one side of each of the vibrating loading trays, and a delivery valve is provided at the end of each of the delivery tracks away from the vibrating loading tray; the parts output from each of the vibrating loading trays can be arranged one by one inside the corresponding delivery track, and when the transfer tray stays at the assembly station corresponding to the delivery mechanism, each of the delivery valves is opened at the same time, and each of the delivery tracks can deliver parts to each of the receiving grooves respectively.

[0008] Preferably, the drilling mechanism includes a three-axis driving mechanism and an extended fixed plate, and a drilling rig is arranged at the bottom end of the extended fixed plate. Under the action of the three-axis driving mechanism, the extended fixed plate can drive the drilling rig to move above the assembly station corresponding to the drilling mechanism; when the transfer tray stays at the assembly station corresponding to the drilling mechanism, the drilling mechanism can drill the parts that need to be drilled and stay inside each of the receiving grooves.

[0009] Preferably, a telescopic hole is opened inside the assembly groove, and a spring hanging rod is arranged inside the telescopic hole. When each of the assembly mechanisms stacks the parts inside the respective accommodating grooves inside the assembly groove, the holes drilled by the drilling mechanism on each part can be sleeved on the outside of the spring hanging rod; the riveting mechanism includes a driving hydraulic cylinder and a rivet head, and the rivet head can move downward along the axial direction of the rivet head and rotate around the axial direction of the rivet head while being driven by the driving hydraulic cylinder; the axis of the rivet head is colinear with the axis of the telescopic hole when the transfer tray stays at the assembly station corresponding to the riveting mechanism, and during the process of the rivet head riveting the parts stacked inside the assembly groove, the spring hanging rod can gradually shrink into the telescopic hole.

[0010] Preferably, the stepping conveying mechanism includes a stepping positioning rail and a stepping drive toothed belt, and a positioning groove and a driven tooth are provided on the lower surface of the transfer tray. The positioning groove is aligned with the stepping positioning rail, and the driven tooth is aligned with and meshed with the stepping drive toothed belt. When the stepping drive toothed belt rotates, the meshing between the stepping drive toothed belt and the driven tooth can drive the entire transfer tray to slide along the stepping conveying mechanism under the restriction of the positioning groove and the stepping positioning rail.

[0011] Preferably, a stepping drive gear and a plurality of stepping limit gears are provided on the inner side of the stepping drive toothed belt, and the stepping drive gear is meshed with the inner side of the stepping drive toothed belt. Driven by the stepping drive gear, the stepping drive toothed belt can rotate under the tension limit of the stepping drive gear and the plurality of stepping limit gears. A stepping drive motor is provided on one side of the stepping drive gear, and the output shaft of the stepping drive motor is coaxially fixed with the stepping drive gear. Driven by the stepping drive motor, each of the transfer trays can move from the previous assembly station to the next assembly station each time.

[0012] Preferably, the reset conveying mechanism includes two transfer rails and a reset rail, and both ends of the reset rail are connected to the stepping conveying mechanism through the transfer rails respectively. The transfer rail includes a reciprocating drive guide rail and a reciprocating sliding plate. Under the drive of the reciprocating drive guide rail, the reciprocating sliding plate can respectively stay at the two ends of the reciprocating drive guide rail, and under the drive of the reciprocating drive guide rail, reciprocate between the two ends of the reciprocating drive guide rail.

[0013] Preferably, a driving block is provided at the top of the reciprocating sliding plate, and when the transfer tray enters the transfer track from the stepping conveying mechanism and enters the reset track from the transfer track, the driving block can slide inside the positioning groove; when the reciprocating sliding plate reciprocates between the two ends of the reciprocating drive guide rail, the driving block fits against the inner wall of the positioning groove, and the movement of the driving block can drive the transfer tray to reciprocate synchronously with the reciprocating sliding plate.

[0014] Preferably, both ends of the stepping drive toothed belt extend into the two transfer rails respectively; when the transfer tray enters the transfer rail located at the head end of the reset rail from the stepping conveying mechanism, the movement of the driving block can drive the transfer tray to detach from the stepping drive toothed belt; when the transfer tray enters the stepping conveying mechanism from the transfer rail located at the tail end of the reset rail, the transfer tray can be moved back to the stepping drive toothed belt, and the driven teeth re-engage with the stepping drive toothed belt.

[0015] An assembly method based on keychain drilling, using the above-mentioned assembly device, comprises the following steps: First, prepare the various parts of the keychain and fill each part inside the delivery mechanism separately; Under the conveyance of the stepping conveyor mechanism and the reset conveyor mechanism, each transfer tray circulates through the conveying loop of each assembly station, and the time taken for each transfer tray to move from the discharge mechanism to the delivery mechanism is the same as the time taken from the previous assembly station to the next assembly station; Driven by the stepping conveyor mechanism, the transfer tray can sequentially carry out the process of placing parts, drilling parts, assembling parts, riveting parts into workpieces and outputting workpieces when passing through each assembly station in sequence; After the transfer tray is output from the discharge mechanism at the tail end of the stepping conveying mechanism, it can be moved along the reset conveying mechanism back to the delivery mechanism at the head end of the stepping conveying mechanism, and the assembly process of each transfer tray is cyclically performed.

[0016] Compared with the prior art, the present invention provides an assembly device and an assembly method based on keychain drilling, which have the following beneficial effects: 1. This assembly equipment, driven by the stepping conveyor mechanism, can sequentially carry out the processes of placing parts, drilling parts, assembling parts, riveting parts into workpieces, and outputting workpieces when the transfer tray passes through each assembly station in sequence; after the transfer tray is output from the discharge mechanism at the tail end of the stepping conveyor mechanism, it can be moved along the reset conveyor mechanism to the placing mechanism at the head end of the stepping conveyor mechanism, and the assembly process of each transfer tray can be cyclically carried out, so that each assembly step can be completed sequentially and continuously in the process of continuous circulation, the workpiece can be assembled quickly, and the corresponding assembly steps can be respectively executed by each assembly station. It is only necessary to fix the position of each assembly station in the initial stage, that is, it can ensure that the subsequent assembly process is assembled under effective positioning, so as to avoid the time-consuming positioning problem in the conventional assembly process, and can ensure the efficiency of workpiece assembly.

[0017] 2. This type of assembly equipment, when each assembly mechanism superimposes the parts inside each accommodating groove inside the assembly groove, can set the holes drilled by the drilling mechanism of each part on the outside of the spring hanging rod, and can position the positions that need to be riveted at the spring hanging rod, and can effectively position each part while ensuring the relative fixation of each part during the riveting process. The rivet head can move downward along the axial direction of the rivet head under the drive of the hydraulic cylinder and rotate around the axial direction of the rivet head at the same time, and can gradually compress the spring hanging rod to the inside of the telescopic hole, and can rivet each part with the cooperation of the telescopic hole, ensuring the accuracy of the riveting position while ensuring the effectiveness of the riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an assembly device of the present invention; Figure 2 It is one of the partial schematic diagrams of the stepping conveying mechanism and the resetting conveying mechanism of an assembly device of the present invention; Figure 3 This is a second partial schematic diagram of a stepping conveying mechanism and a resetting conveying mechanism of an assembly device of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of a vibrating loading tray of a delivery mechanism of an assembly device of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of a drilling mechanism of an assembly device of the present invention; Figure 6 A schematic diagram of a riveting mechanism of an assembly device and a riveting structure of a transfer tray of the present invention; Figure 7 This is one of the three-dimensional structural schematic diagrams of a transfer tray of an assembly device of the present invention; Figure 8 For the present invention Figure 7 A magnified view of part A; Fig. 9 This is the second schematic diagram of the three-dimensional structure of a transfer tray of an assembly device of the present invention.

[0019] In the figure: 1. Mounting frame; 2. Stepping conveying mechanism; 21. Stepping positioning track; 22. Stepping drive toothed belt; 23. Stepping drive gear; 24. Stepping limit gear; 25. Stepping drive motor; 3. Reset conveying mechanism; 31. Transfer track; 311. Reciprocating drive guide rail; 312. Reciprocating sliding plate; 313. Drive block; 32. Reset track; 4. Transfer tray; 41. Assembly slot; 411. Telescopic hole; 412. Spring hanging rod; 42. Accommodating slot; 43. Positioning slot; 44. Driven gear; 5. Delivery mechanism; 51. Vibrating loading tray; 52. Delivery track; 53. Delivery valve; 6. Drilling mechanism; 61. Three-axis drive mechanism; 62. Extension fixing plate; 63. Drilling rig; 7. Assembly mechanism; 8. Riveting mechanism; 81. Driving hydraulic cylinder; 82. Riveting head; 9. Discharging mechanism. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an assembly device and an assembly method based on keychain drilling. Example

[0022] See also Figure 1-Figure 9An assembly device includes an installation frame 1, a stepping conveying mechanism 2 and a reset conveying mechanism 3 are arranged on the top of the installation frame 1, the head end of the stepping conveying mechanism 2 is connected to the tail end of the reset conveying mechanism 3, and the tail end of the stepping conveying mechanism 2 is connected to the head end of the reset conveying mechanism 3; a plurality of assembly stations are arranged on the side of the stepping conveying mechanism 2 away from the reset conveying mechanism 3, and a conveying loop for each transfer tray 4 to circulate through each assembly station is formed between the stepping conveying mechanism 2 and the reset conveying mechanism 3; each assembly station from the head end of the stepping conveying mechanism 2 to the tail end of the stepping conveying mechanism 2 is sequentially provided with a placing mechanism 5, a drilling mechanism 6 , several assembling mechanisms 7, riveting mechanisms 8 and discharging mechanisms 9; driven by the stepping conveying mechanism 2, the transfer tray 4 can sequentially carry out the processes of placing parts, drilling parts, assembling parts, riveting parts into workpieces and outputting workpieces when passing through each assembly station in sequence; after the transfer tray 4 is output from the discharging mechanism 9 at the tail end of the stepping conveying mechanism 2, it can be moved along the reset conveying mechanism 3 to the placing mechanism 5 at the head end of the stepping conveying mechanism 2; driven by the reset conveying mechanism 3 and the stepping conveying mechanism 2 respectively, the time taken to move from the discharging mechanism 9 to the placing mechanism 5 is the same as the time taken to move from the previous assembly station to the next assembly station.

[0023] In specific use, first prepare the various parts required for the workpiece and the transfer tray 4 required for assembling the workpiece according to the type of workpiece to be prepared, and then fill each part into the delivery mechanism 5 respectively. Under the transportation of the stepping conveying mechanism 2 and the reset conveying mechanism 3, each transfer tray 4 circulates through the conveying circuit of each assembly station, and the time taken for each transfer tray 4 to move from the discharge mechanism 9 to the delivery mechanism 5 is the same as the time taken from the previous assembly station to the next assembly station. Driven by the stepping conveying mechanism 2, the transfer tray 4 can deliver parts, drill parts, assemble parts, and rivet parts in sequence when passing through each assembly station in sequence. The process of outputting workpieces and workpieces; after the transfer tray 4 is output from the discharge mechanism 9 at the tail end of the stepping conveyor mechanism 2, it can be moved along the reset conveying mechanism 3 to the delivery mechanism 5 at the head end of the stepping conveyor mechanism 2, and the assembly process of each transfer tray 4 is cyclically performed, so that in the process of continuous circulation, each assembly step can be completed in sequence and continuously, and the workpieces can be assembled quickly. The corresponding assembly steps can be performed respectively through each assembly station, and only the position of each assembly station needs to be fixed in the initial stage, that is, it can ensure that the subsequent assembly processes are assembled under effective positioning to avoid time-consuming positioning problems in conventional assembly processes, and the efficiency of workpiece assembly can be ensured. Example

[0024] See also Figure 1-Figure 9, which is different from the above-mentioned embodiment, is that an assembly groove 41 and a plurality of receiving grooves 42 are provided at the top of each transfer tray 4, and the delivery mechanism 5 includes a plurality of vibrating loading trays 51, and a delivery track 52 is provided on one side of each vibrating loading tray 51, and a delivery valve 53 is provided at the end of each delivery track 52 away from the vibrating loading tray 51; the parts output from each vibrating loading tray 51 can be arranged one by one inside the corresponding delivery track 52, and when the transfer tray 4 stays at the assembly station corresponding to the delivery mechanism 5, each delivery valve 53 is opened at the same time, and each delivery track 52 can deliver parts to each receiving groove 42 respectively, thereby ensuring that only one required part is delivered to each receiving groove 42 each time, so as to effectively complete the part delivery process.

[0025] The drilling mechanism 6 includes a three-axis driving mechanism 61 and an extended fixed plate 62. A drill rig 63 is arranged at the bottom end of the extended fixed plate 62. Under the action of the three-axis driving mechanism 61, the extended fixed plate 62 can drive the drill rig 63 to move above the assembly station corresponding to the drilling mechanism 6; when the transfer tray 4 stays at the assembly station corresponding to the drilling mechanism 6, the drilling mechanism 6 can drill the parts that need to be drilled and are inside each accommodating groove 42.

[0026] A telescopic hole 411 is opened inside the assembly groove 41, and a spring hanging rod 412 is arranged inside the telescopic hole 411. When each assembly mechanism 7 stacks the parts inside each accommodating groove 42 inside the assembly groove 41, the holes drilled by the drilling mechanism 6 of each part can be sleeved on the outside of the spring hanging rod 412; the riveting mechanism 8 includes a driving hydraulic cylinder 81 and a riveting head 82. The riveting head 82 can move downward along the axial direction of the riveting head 82 and rotate around the axial direction of the riveting head 82 under the drive of the driving hydraulic cylinder 81; the axis of the riveting head 82 is colinear with the axis of the telescopic hole 411 when the transfer tray 4 stays at the assembly station corresponding to the riveting mechanism 8. In the process of riveting the parts stacked inside the assembly groove 41 by the riveting head 82, the spring hanging rod 412 can gradually shrink into the telescopic hole 411.

[0027] Specifically, the assembly mechanism 7 and the discharge mechanism 9 both include a picking robot arm, and a pneumatic clamp is provided at the movable end of the picking robot arm; when the transfer tray 4 stays at each assembly mechanism 7, the picking robot arm corresponding to each assembly mechanism 7 can sequentially stack the parts inside each receiving groove 42 inside the assembly groove 41 through the pneumatic clamp; when the transfer tray 4 stays at the discharge mechanism 9, the picking robot arm corresponding to the discharge mechanism 9 can take the riveted workpiece out of the assembly groove 41 through the pneumatic clamp, and place it on the conveyor belt or inside the collection box according to the subsequent process.

[0028] In specific use, due to the telescopic hole 411 opened inside the assembly groove 41 and the spring hanging rod 412 arranged inside the telescopic hole 411, when each assembly mechanism 7 superimposes the parts inside each receiving groove 42 on the inside of the assembly groove 41, the holes drilled by the drilling mechanism 6 of each part can be set outside the spring hanging rod 412, and the positions to be riveted (the positions of the holes drilled by the drilling mechanism 6) can be positioned at the spring hanging rod 412, which can effectively position each part and ensure the relative fixation of each part during the riveting process. The riveting head 82 drives the hydraulic cylinder 81 Under the drive of the driving hydraulic cylinder 81, the rivet head 82 can move downward along the axis direction of the rivet head 82 and rotate around the axis direction of the rivet head 82 (the structure in which the rivet head 82 rotates while moving downward under the drive of the driving hydraulic cylinder 81 is a common solution in the prior art. Specifically, a spiral track can be set on the outside of the rivet head 82, and the rivet head 82 rotates while moving downward under the restriction of the spiral track), and the spring hanging rod 412 can be gradually compressed to the inside of the telescopic hole 411, and each part can be riveted with the cooperation of the telescopic hole 411, thereby ensuring the accuracy of the riveting position and the effectiveness of the riveting. Example

[0029] See also Figure 1-Figure 9 The stepping conveying mechanism 2 includes a stepping positioning rail 21 and a stepping driving toothed belt 22. A positioning groove 43 and a driven tooth 44 are provided on the lower surface of the transfer tray 4. The positioning groove 43 is aligned with the stepping positioning rail 21, and the driven tooth 44 is aligned with and meshed with the stepping driving toothed belt 22. When the stepping driving toothed belt 22 rotates, the meshing between the stepping driving toothed belt 22 and the driven tooth 44 can drive the entire transfer tray 4 to slide along the stepping conveying mechanism 2 under the restriction of the positioning groove 43 and the stepping positioning rail 21.

[0030] A stepping drive gear 23 and a plurality of stepping limit gears 24 are arranged on the inner side of the stepping drive toothed belt 22. The stepping drive gear 23 is meshed with the inner side of the stepping drive toothed belt 22. Driven by the stepping drive gear 23, the stepping drive toothed belt 22 can rotate under the tension limit of the stepping drive gear 23 and the plurality of stepping limit gears 24. A stepping drive motor 25 is arranged on one side of the stepping drive gear 23. The output shaft of the stepping drive motor 25 is coaxially fixed with the stepping drive gear 23. Driven by the stepping drive motor 25, each transfer tray 4 can move from the previous assembly station to the next assembly station each time.

[0031] The reset conveying mechanism 3 includes two transfer rails 31 and a reset rail 32. The reset rail 32 (the structure of the reset rail 32 is exactly the same as that of the stepping conveying mechanism 2, but the conveying direction is opposite, and the speed of conveying the transfer tray 4 by the reset conveying mechanism 3 is greater than the speed of conveying the transfer tray 4 by the stepping conveying mechanism 2, so that the time taken to move from the discharge mechanism 9 to the delivery mechanism 5, that is, the time taken for the transfer tray 4 to pass through the transfer rail 31-the reset rail 32 and the transfer rail 31, is the same as the time taken from the previous assembly station to the next assembly station) is connected to the stepping conveying mechanism 2 at both ends through the transfer rail 31 respectively. The transfer rail 31 includes a reciprocating drive guide rail 311 and a reciprocating sliding plate 312. Under the drive of the reciprocating drive guide rail 311, the reciprocating sliding plate 312 can stay at the two ends of the reciprocating drive guide rail 311 respectively, and reciprocate between the two ends of the reciprocating drive guide rail 311 under the drive of the reciprocating drive guide rail 311.

[0032] A driving block 313 is provided at the top of the reciprocating sliding plate 312. When the transfer tray 4 enters the transfer track 31 from the stepping conveying mechanism 2 and enters the reset track 32 from the transfer track 31, the driving block 313 can slide inside the positioning groove 43; when the reciprocating sliding plate 312 reciprocates between the two ends of the reciprocating driving guide rail 311, the driving block 313 fits against the inner wall of the positioning groove 43, and the movement of the driving block 313 can drive the transfer tray 4 to reciprocate synchronously with the reciprocating sliding plate 312.

[0033] The two ends of the stepping drive toothed belt 22 extend into the two transfer rails 31 respectively; when the transfer tray 4 enters the transfer rail 31 located at the head end of the reset rail 32 from the stepping conveying mechanism 2, the movement of the driving block 313 can drive the transfer tray 4 to detach from the stepping drive toothed belt 22; when the transfer tray 4 enters the stepping conveying mechanism 2 from the transfer rail 31 located at the tail end of the reset rail 32, the transfer tray 4 can be moved back to the stepping drive toothed belt 22, and the driven teeth 44 re-engage with the stepping drive toothed belt 22.

[0034] Therefore, when in use, inside the stepping conveying mechanism 2, when the stepping drive toothed belt 22 rotates, the meshing between the stepping drive toothed belt 22 and the driven teeth 44 can drive the entire transfer tray 4 to be restricted by the positioning groove 43 and the positioning track 21, and under the stepping drive of the stepping drive motor 25, it can move from the previous assembly station to the next assembly station each time, slide along the stepping conveying mechanism 2, and can sequentially carry out the delivery of parts, drilling of parts, assembly of parts, riveting of parts into workpieces and output of workpieces. After the assembly is completed, the transfer track 31 located at the head end of the reset track 32 The reciprocating sliding plate 312 is pre-moved to the rear end of the stepping conveying mechanism 2, and then the transfer tray 4 is moved to the inside of the transfer track 31 by the stepping driving toothed belt 22 extending into the inside of the transfer track 31, so that the driving block 313 and the positioning groove 43 slide, and the driving block 313 enters the inside of the positioning groove 43. Then, under the drive of the reciprocating driving guide rail 31, the driving block 313 fits with the inner wall of the positioning groove 43, and the movement of the driving block 313 can drive the transfer tray 4 to reciprocate synchronously with the reciprocating sliding plate 312, thereby moving the transfer tray 4 to the end close to the head end of the reset track 32; The principle of the transfer tray 4 at the tail end of the reset track 32 and the transfer track 31 located at the tail end of the reset track 32 is the same as above. The transfer tray 4 enters the reset track 32 from the transfer track 31, passes through the reset track 32 located at the tail end of the reset track 32 and re-enters the head end of the stepping conveyor mechanism 2. The empty transfer tray 4 can be moved back to the stepping drive toothed belt 22, and the driven teeth 44 re-engage with the stepping drive toothed belt 22. The empty transfer tray 4 re-enters the stepping conveyor mechanism 2 to continue the continuous cycle of assembly, thereby effectively completing the assembly operation of the workpiece. Example

[0035] An assembly method based on keychain drilling, characterized in that an assembly device as described in any one of Embodiments 1 to 3 is used, comprising the following steps: First, prepare the various parts of the key chain, and fill each part into the inside of the delivery mechanism 5 respectively; Under the conveyance of the stepping conveying mechanism 2 and the reset conveying mechanism 3, each transfer tray 4 circulates through the conveying loop of each assembly station, and the time taken for each transfer tray 4 to move from the discharge mechanism 9 to the delivery mechanism 5 is the same as the time taken from the previous assembly station to the next assembly station; Driven by the stepping conveying mechanism 2, the transfer tray 4 can sequentially carry out the process of placing parts, drilling parts, assembling parts, riveting parts into workpieces, and outputting workpieces when passing through each assembly station in sequence; After the transfer tray 4 is output from the discharge mechanism 9 at the tail end of the stepping conveying mechanism 2, it can be moved along the reset conveying mechanism 3 back to the delivery mechanism 5 at the head end of the stepping conveying mechanism 2, and the assembly process of each transfer tray 4 is cyclically performed.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembly device, comprising a mounting frame (1), wherein a stepping conveying mechanism (2) and a reset conveying mechanism (3) are arranged at the top of the mounting frame (1), characterized in that: The head end of the stepping conveying mechanism (2) is connected to the tail end of the resetting conveying mechanism (3), and the tail end of the stepping conveying mechanism (2) is connected to the head end of the resetting conveying mechanism (3); A plurality of assembly stations are arranged on a side of the stepping conveying mechanism (2) away from the reset conveying mechanism (3), and a conveying loop is formed between the stepping conveying mechanism (2) and the reset conveying mechanism (3) so that each transfer tray (4) circulates through each assembly station; Each assembly station from the head end of the stepping conveying mechanism (2) to the tail end of the stepping conveying mechanism (2) is sequentially provided with a feeding mechanism (5), a drilling mechanism (6), a plurality of assembly mechanisms (7), a riveting mechanism (8) and a discharge mechanism (9); Driven by the stepping conveying mechanism (2), the transfer tray (4) can sequentially carry out the processes of placing parts, drilling parts, assembling parts, riveting parts into workpieces, and outputting workpieces when passing through each assembly station in sequence; After the transfer tray (4) is output from the discharge mechanism (9) at the rear end of the stepping conveying mechanism (2), it can be moved along the reset conveying mechanism (3) back to the delivery mechanism (5) at the front end of the stepping conveying mechanism (2); Under the respective driving of the reset conveying mechanism (3) and the stepping conveying mechanism (2), the time taken to move from the discharge mechanism (9) to the delivery mechanism (5) is the same as the time taken to move from the previous assembly station to the next assembly station.

2. An assembly device according to claim 1, characterized in that: Each of the transfer trays (4) is provided with an assembly slot (41) and a plurality of receiving slots (42) at the top, the delivery mechanism (5) comprises a plurality of vibrating loading trays (51), a delivery track (52) is provided on one side of each of the vibrating loading trays (51), and a delivery valve (53) is provided at one end of each of the delivery tracks (52) away from the vibrating loading tray (51); The parts output from each of the vibrating loading trays (51) can be arranged one by one inside the corresponding delivery track (52). When the transfer tray (4) stays at the assembly station corresponding to the delivery mechanism (5), each of the delivery valves (53) is opened at the same time, and each of the delivery tracks (52) can deliver parts to each of the receiving grooves (42) respectively.

3. An assembly device according to claim 2, characterized in that: The drilling mechanism (6) comprises a three-axis driving mechanism (61) and an extension fixing plate (62); a drilling machine (63) is arranged at the bottom end of the extension fixing plate (62); under the action of the three-axis driving mechanism (61), the extension fixing plate (62) can drive the drilling machine (63) to move above the assembly station corresponding to the drilling mechanism (6); When the transfer tray (4) stays at the assembly station corresponding to the drilling mechanism (6), the drilling mechanism (6) is capable of drilling the parts that need to be drilled and are inside each of the receiving grooves (42).

4. An assembly device according to claim 3, characterized in that: A telescopic hole (411) is provided inside the assembly groove (41), and a spring hanging rod (412) is provided inside the telescopic hole (411). When each assembly mechanism (7) stacks the parts inside each accommodating groove (42) inside the assembly groove (41), the holes drilled by the drilling mechanism (6) on each part can be sleeved outside the spring hanging rod (412); The riveting mechanism (8) comprises a driving hydraulic cylinder (81) and a riveting head (82); the riveting head (82) is driven by the driving hydraulic cylinder (81) to move downward along the axis of the riveting head (82) and to rotate around the axis of the riveting head (82) at the same time; The axis of the riveting head (82) is colinear with the axis of the telescopic hole (411) when the transfer tray (4) is stationary at the assembly station corresponding to the riveting mechanism (8), and during the process of the riveting head (82) riveting the parts stacked inside the assembly groove (41), the spring hanging rod (412) can gradually shrink and enter the telescopic hole (411).

5. An assembly device according to claim 1, characterized in that: The stepping conveying mechanism (2) comprises a stepping positioning track (21) and a stepping driving toothed belt (22); a positioning groove (43) and a driven tooth (44) are provided on the lower surface of the transfer material tray (4); the positioning groove (43) and the stepping positioning track (21) are aligned, and the driven tooth (44) and the stepping driving toothed belt (22) are aligned and meshed; When the stepping drive toothed belt (22) rotates, the meshing between the stepping drive toothed belt (22) and the driven teeth (44) can drive the entire transfer tray (4) to slide along the stepping conveying mechanism (2) under the restriction of the positioning groove (43) and the stepping positioning track (21).

6. An assembly device according to claim 5, characterized in that: A stepping drive gear (23) and a plurality of stepping limit gears (24) are arranged on the inner side of the stepping drive toothed belt (22); the stepping drive gear (23) is in gear meshing engagement with the inner side of the stepping drive toothed belt (22); and under the drive of the stepping drive gear (23), the stepping drive toothed belt (22) can rotate under the tension limit of the stepping drive gear (23) and the plurality of stepping limit gears (24); A stepping drive motor (25) is provided on one side of the stepping drive gear (23), and an output shaft of the stepping drive motor (25) is coaxially fixed to the stepping drive gear (23). Under the drive of the stepping drive motor (25), each of the transfer trays (4) can move from a previous assembly station to a subsequent assembly station each time.

7. An assembly device according to claim 6, characterized in that: The reset conveying mechanism (3) comprises two transfer rails (31) and a reset rail (32); both ends of the reset rail (32) are respectively connected to the stepping conveying mechanism (2) via the transfer rails (31); the transfer rail (31) comprises a reciprocating drive guide rail (311) and a reciprocating sliding plate (312); under the drive of the reciprocating drive guide rail (311), the reciprocating sliding plate (312) can respectively stay at both ends of the reciprocating drive guide rail (311), and under the drive of the reciprocating drive guide rail (311), reciprocate between the two ends of the reciprocating drive guide rail (311).

8. An assembly device according to claim 7, characterized in that: A driving block (313) is disposed at the top end of the reciprocating sliding plate (312), and when the transfer tray (4) enters the transfer track (31) from the stepping conveying mechanism (2) and enters the reset track (32) from the transfer track (31), the driving block (313) can slide inside the positioning groove (43); When the reciprocating sliding plate (312) reciprocates between the two ends of the reciprocating driving guide rail (311), the driving block (313) fits against the inner wall of the positioning groove (43), and the movement of the driving block (313) can drive the transfer material tray (4) to reciprocate synchronously with the reciprocating sliding plate (312).

9. An assembly device according to claim 8, characterized in that: The two ends of the step-by-step drive toothed belt (22) extend into the interior of the two transfer rails (31) respectively; when the transfer tray (4) enters the transfer rail (31) located at the head end of the reset rail (32) from the step-by-step conveying mechanism (2), the movement of the drive block (313) can drive the transfer tray (4) to detach from the step-by-step drive toothed belt (22); When the transfer tray (4) enters the stepping conveying mechanism (2) from the transfer track (31) located at the rear end of the reset track (32), the transfer tray (4) can be moved back onto the stepping drive toothed belt (22), and the driven teeth (44) are meshed with the stepping drive toothed belt (22) again.

10. An assembly method based on keychain drilling, characterized in that: An assembly device as claimed in any one of claims 1 to 9 is used, comprising the following steps: First, prepare the various parts of the key chain, and fill each part into the inside of the delivery mechanism (5) respectively; Under the conveyance of the stepping conveying mechanism (2) and the reset conveying mechanism (3), each transfer tray (4) circulates through the conveying loop of each assembly station, and the time taken for each transfer tray (4) to move from the discharge mechanism (9) to the delivery mechanism (5) is the same as the time taken from the previous assembly station to the next assembly station; Driven by the stepping conveying mechanism (2), the transfer tray (4) can sequentially carry out the processes of placing parts, drilling parts, assembling parts, riveting parts into workpieces, and outputting workpieces when passing through each assembly station in sequence; After the transfer tray (4) is output from the discharge mechanism (9) at the rear end of the stepping conveying mechanism (2), it can be moved along the reset conveying mechanism (3) to the delivery mechanism (5) at the front end of the stepping conveying mechanism (2), and the assembly process of each transfer tray (4) is cyclically performed.

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